print config v2 Issue #191 (#307)

* print config v2

 - printconfig script
 - test_printconfig for tox testing
 - update globals for GUIDES_UPDATED date value
 - update ssh_audit for print_config argument and checks

* pr307 update 1

* pr307 update 2

* pr307 - attempt 2

* Update ssh_audit.py

Missed a TAB

src/ssh_audit/hardeningguides.py

@@ -0,0 +1,477 @@
+"""
+   The MIT License (MIT)
+
+   Copyright (C) 2020-2024 Joe Testa (jtesta@positronsecurity.com)
+
+   Permission is hereby granted, free of charge, to any person obtaining a copy
+   of this software and associated documentation files (the "Software"), to deal
+   in the Software without restriction, including without limitation the rights
+   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+   copies of the Software, and to permit persons to whom the Software is
+   furnished to do so, subject to the following conditions:
+
+   The above copyright notice and this permission notice shall be included in
+   all copies or substantial portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+   THE SOFTWARE.
+"""
+from typing import Dict, Any
+import sys
+
+from ssh_audit import exitcodes
+from ssh_audit.globals import VERSION
+
+
+
+BUILTIN_GUIDES: Dict[str, Dict[str, Any]] = {
+
+    # Server
+    # Amazon Server
+    'Amazon 2023 Server (version 1)': {'version': '1', 'changelog': {'2024-10-01': 'Re-ordered host keys to prioritize ED25519 due to efficiency. Re-ordered cipher list to prioritize larger key sizes as a countermeasure to quantum attacks', '2024-04-22': 'added connection throttling instructions to counteract the DHEat denial-of-service attack.', '2024-03-15': 'Initial revision'}, 'server_policy': True},
+
+    # Debian Server
+    'Debian Bullseye Server (version 1)': {'version': '1', 'changelog': {'2021-09-17': 'Initial Revision.'}, 'server_policy': True},
+    'Debian Bookworm Server (version 1)': {'version': '1', 'changelog': {'2021-09-17': 'Initial Revision.'}, 'server_policy': True},
+
+    # Rocky Linux
+    'Rocky 9 Server (version 1)': {'version': '1', 'changelog': {'2024-10-01': 'Re-ordered host keys to prioritize ED25519 due to efficiency. Re-ordered cipher list to prioritize larger key sizes as a countermeasure to quantum attacks', '\n2024-04-24': 'Added connection throttling instructions to counteract the DHEat denial-of-service attack.'}, 'server_policy': True},
+
+    # Ubuntu Server
+    'Ubuntu 2004 Server (version 1)': {'version': '1', 'changelog': {'2024-04-24': '\nAdded connection throttling instructions to counteract the DHEat denial-of-service attack.'}, 'server_policy': True},
+    'Ubuntu 2204 Server (version 1)': {'version': '1', 'changelog': {'2024-10-01': '\nRe-ordered host keys to prioritize ED25519 due to efficiency. \nRe-ordered cipher list to prioritize larger key sizes as a countermeasure to quantum attacks', '\n2024-04-22': '\nAdded connection throttling instructions to counteract the DHEat denial-of-service attack.'}, 'server_policy': True},
+    'Ubuntu 2404 Server (version 1)': {'version': '1', 'changelog': {'2024-10-01': '\nAdded Required RSASize directive to enforce a minimum of 3072-bit user and host-based authentication keys.', '\n2024-04-29': '\nInitial revision. In comparison to Ubuntu 22.04 LTS guide, the following changes were made: \n1.) For key exchanges, diffie-hellman-group18-sha512 and diffie-hellman-group-exchange-sha256 were prioritized over diffie-hellman-group16-sha512 due to greater security strength; GSS algorithms were prioritized over their non-GSS equivalents in order to match the client guide, \n2.) For ciphers, 256-bit AES ciphers were prioritized over 192 and 128-bit AES ciphers due to their increased resistence against quantum computing attacks (previously, weaker GCM ciphers had priority over CTR ciphers), \n3.) The HostbasedAcceptedAlgorithms and PubkeyAcceptedAlgorithms settings are now the same as HostKeyAlgorithms setting, \n4.) The hmac-sha2-512-etm@openssh.com MAC was increased in priority due to its increased resistence against quantum computing attacks, and \n5.) The ED25519 host keys were given priority over RSA host keys due to their greater efficiency.'}, 'server_policy': True},
+
+    # Client
+    # Amazon
+    'Amazon 2023 Client (version 1)': {'version': '1', 'changelog': {'2024-10-01': 'Re-ordered cipher list to prioritize larger key sizes as a countermeasure to quantum attacks.', '2024-04-22': 'added connection throttling instructions to counteract the DHEat denial-of-service attack.', '2024-03-15': 'Initial revision'}, 'server_policy': False},
+
+    # Debian
+    'Debian Bookworm Client (version 1)': {'version': '1', 'changelog': {'2024-10-01': 'Added RequiredRSASize directive to enforce a minimum of 3072-bit user and host-based authentication keys. Re-ordered cipher list to prioritize larger key sizes as a countermeasure to quantum attacks.', '2024-03-15': 'Initial Revision'}, 'server_policy': False},
+
+    # Rocky Linux
+    'Rocky 9 Client (version 1)': {'version': '1', 'changelog': {'2024-10-01': 'Added RequiredRSASize directive to enforce a minimum of 3072-bit user and host-based authentication keys. Re-ordered cipher list to prioritize larger key sizes as a countermeasure to quantum attacks.', '2024-03-15': 'Initial Revision'}, 'server_policy': False},
+
+    # Mint
+    'Mint 20 Client (version 1)': {'version': '1', 'changelog': {'2020-10-20': 'Initial Revision'}, 'server_policy': False},
+    'Mint 21 Client (version 1)': {'version': '1', 'changelog': {'2020-10-20': 'Initial Revision'}, 'server_policy': False},
+    'Mint 22 Client (version 1)': {'version': '1', 'changelog': {'2020-10-20': 'Initial Revision'}, 'server_policy': False},
+
+    # Ubuntu
+    'Ubuntu 2004 Client (version 1)': {'version': '1', 'changelog': {'2020-10-20': 'Initial Revision'}, 'server_policy': False},
+    'Ubuntu 2204 Client (version 1)': {'version': '1', 'changelog': {'2020-10-20': 'Initial Revision'}, 'server_policy': False},
+    'Ubuntu 2404 Client (version 1)': {'version': '1', 'changelog': {'2020-10-20': 'Initial Revision'}, 'server_policy': False},
+}
+
+
+
+class PrintHardeningGuides:
+    def __init__(self, os_type: str, os_ver: str, clientserver: str) -> None:
+        self.os_type = os_type
+        self.os_ver = os_ver
+        self.clientserver = clientserver
+
+        self.get_config()
+
+    def get_config(self) -> None:
+
+        retval = exitcodes.GOOD
+
+        os_type = self.os_type
+        os_ver = self.os_ver
+        clientserver = self.clientserver
+        policy_name = os_type + " " + os_ver + " " + clientserver
+
+        supported_os = ["Amazon", "Debian", "Mint", "Rocky", "Ubuntu"]
+        supported_edition = ["2404", "2204", "2004", "1804", "2023", "22", "21", "20", "9", "Bookworm", "Bullseye"]
+        if clientserver not in ["Server", "Client"] or os_type not in supported_os and os_ver not in supported_edition:
+            print(" ")
+            print(f"\033[1mssh-audit Version : {VERSION}\033[0m")
+            print(" ")
+            print(f"\033[1mConfiguration : {os_type} {os_ver} {clientserver} is not supported\033[0m")
+            PrintHardeningGuides.supported_varient()
+            sys.exit(retval)
+
+        # Server Configs
+        if clientserver in ["Server"]:
+            # Amazon Linux
+            if os_type in ["Amazon"] and os_ver in ["2023"]:
+                PrintHardeningGuides.print_ver_changelog(policy_name)
+                PrintHardeningGuides.server_modern_common()
+                PrintHardeningGuides.amazon_server_2023()
+                sys.exit(retval)
+            # Debian
+            elif os_type in ["Debian"] and os_ver in ["Bookworm"]:
+                PrintHardeningGuides.print_ver_changelog(policy_name)
+                PrintHardeningGuides.server_modern_common()
+                PrintHardeningGuides.bookworm_server()
+                PrintHardeningGuides.debian_ubuntu_rate_throttling()
+                sys.exit(retval)
+            elif os_type in ["Debian"] and os_ver in ["Bullseye"]:
+                PrintHardeningGuides.print_ver_changelog(policy_name)
+                PrintHardeningGuides.server_modern_common()
+                PrintHardeningGuides.bullseye_server()
+                sys.exit(retval)
+            # Rocky Linux
+            elif os_type in ["Rocky"] and os_ver in ["9"]:
+                PrintHardeningGuides.print_ver_changelog(policy_name)
+                PrintHardeningGuides.server_modern_common()
+                PrintHardeningGuides.rocky_9_server()
+                sys.exit(retval)
+            # Ubuntu
+            elif os_type in ["Ubuntu"] and os_ver in ["2404"]:
+                PrintHardeningGuides.print_ver_changelog(policy_name)
+                PrintHardeningGuides.server_modern_common()
+                PrintHardeningGuides.ubuntu_server_2404()
+                PrintHardeningGuides.debian_ubuntu_rate_throttling()
+                sys.exit(retval)
+            elif os_type in ["Ubuntu"] and os_ver in ["2204"]:
+                PrintHardeningGuides.print_ver_changelog(policy_name)
+                PrintHardeningGuides.server_modern_common()
+                PrintHardeningGuides.ubuntu_server_2204()
+                PrintHardeningGuides.debian_ubuntu_rate_throttling()
+                sys.exit(retval)
+            elif os_type in ["Ubuntu"] and os_ver in ["2004"]:
+                PrintHardeningGuides.print_ver_changelog(policy_name)
+                PrintHardeningGuides.server_modern_common()
+                PrintHardeningGuides.ubuntu_server_2004()
+                PrintHardeningGuides.debian_ubuntu_rate_throttling()
+                sys.exit(retval)
+            elif os_type in ["Ubuntu"] and os_ver in ["1804"]:
+                PrintHardeningGuides.print_ver_changelog(policy_name)
+                PrintHardeningGuides.server_legacy_common()
+                PrintHardeningGuides.ubuntu_server_1804()
+                sys.exit(retval)
+            else:
+                PrintHardeningGuides.supported_varient()
+                sys.exit(retval)
+
+
+        # Client Configs
+        if clientserver in ["Client"]:
+            # Amazon
+            if os_type in ["Amazon"] and os_ver in ["2023"]:
+                PrintHardeningGuides.print_ver_changelog(policy_name)
+                PrintHardeningGuides.amazon_2023_client()
+                sys.exit(retval)
+            # Debian
+            elif os_type in ["Debian"] and os_ver in ["Bookworm"]:
+                PrintHardeningGuides.print_ver_changelog(policy_name)
+                PrintHardeningGuides.debian_bookworm_client()
+                sys.exit(retval)
+            # Mint
+            elif os_type in ["Mint"] and os_ver in ["22"]:
+                PrintHardeningGuides.print_ver_changelog(policy_name)
+                PrintHardeningGuides.ubuntu_2404_mint_22_client()
+                sys.exit(retval)
+            elif os_type in ["Mint"] and os_ver in ["21"]:
+                PrintHardeningGuides.print_ver_changelog(policy_name)
+                PrintHardeningGuides.ubuntu_2204_mint_21_client()
+                sys.exit(retval)
+            elif os_type in ["Mint"] and os_ver in ["20"]:
+                PrintHardeningGuides.print_ver_changelog(policy_name)
+                PrintHardeningGuides.print_ver_changelog(policy_name)
+                PrintHardeningGuides.ubuntu_2004_mint_20_client()
+                sys.exit(retval)
+            # Rocky
+            elif os_type in ["Rocky"] and os_ver in ["9"]:
+                PrintHardeningGuides.print_ver_changelog(policy_name)
+                PrintHardeningGuides.rocky_9_client()
+                sys.exit(retval)
+            # Ubuntu
+            elif os_type in ["Ubuntu"] and os_ver in ["2404"]:
+                PrintHardeningGuides.print_ver_changelog(policy_name)
+                PrintHardeningGuides.ubuntu_2404_mint_22_client()
+                sys.exit(retval)
+            elif os_type in ["Ubuntu"] and os_ver in ["2204"]:
+                PrintHardeningGuides.print_ver_changelog(policy_name)
+                PrintHardeningGuides.ubuntu_2204_mint_21_client()
+                sys.exit(retval)
+            elif os_type in ["Ubuntu"] and os_ver in ["2004"]:
+                PrintHardeningGuides.print_ver_changelog(policy_name)
+                PrintHardeningGuides.ubuntu_2004_mint_20_client()
+                sys.exit(retval)
+            else:
+                PrintHardeningGuides.supported_varient()
+                sys.exit(retval)
+
+
+
+    @staticmethod
+    def supported_varient() -> None:
+        retval = exitcodes.GOOD
+        print(" ")
+        print("For current, community developed and legacy guides")
+        print("check the website : https://www.ssh-audit.com/hardening_guides.html")
+        print(" ")
+        print("\033[1mSupported Server Configurations : \033[0m")
+        print(" ")
+        print(r"Amazon 2023 Server")
+        print(r"Debian Bookworm Server")
+        print(r"Debian Bullseye Server")
+        print(r"Rocky 9 Server")
+        print(r"Ubuntu 2404 Server")
+        print(r"Ubuntu 2204 Server")
+        print(r"Ubuntu 2004 Server")
+        print(" ")
+        print("\033[1mSupported Client Configurations : \033[0m")
+        print(r"Amazon 2023 Client")
+        print(r"Debian Bookworm Client")
+        print(r"Mint 22 Client")
+        print(r"Mint 21 Client")
+        print(r"Mint 20 Client")
+        print(r"Rocky 9 Client")
+        print(r"Ubuntu 2404 Client")
+        print(r"Ubuntu 2204 Client")
+        print(r"Ubuntu 2004 Client")
+        print(" ")
+        print("\033[1mExample Usage : \033[0m ")
+        print(r"python3 ssh-audit.py --get-hardening-guides Ubuntu 2404 Server")
+        print(" ")
+        sys.exit(retval)
+
+
+    # Client Configurations
+
+
+    @staticmethod
+    def amazon_2023_client() -> None:
+        print(" ")
+        print("\033[1mRun the following in a terminal to harden the SSH client for the local user:\033[0m")
+        print(" ")
+        print(r'mkdir -p -m 0700 ~/.ssh; echo -e "\nHost *\n Ciphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-gcm@openssh.com,aes128-ctr\n\n KexAlgorithms sntrup761x25519-sha512@openssh.com,gss-curve25519-sha256-,curve25519-sha256,curve25519-sha256@libssh.org,gss-group16-sha512-,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256\n\n MACs hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com\n\n HostKeyAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\n CASignatureAlgorithms sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\n GSSAPIKexAlgorithms gss-curve25519-sha256-,gss-group16-sha512-\n\n HostbasedAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256-cert-v01@openssh.com,rsa-sha2-256\n\n PubkeyAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256-cert-v01@openssh.com,rsa-sha2-256\n\n" >> ~/.ssh/config')
+
+    @staticmethod
+    def debian_bookworm_client() -> None:
+        print(" ")
+        print("\033[1mRun the following in a terminal to harden the SSH client for the local user:\033[0m")
+        print(" ")
+        print(r'mkdir -p -m 0700 ~/.ssh; echo -e "\nHost *\n Ciphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-gcm@openssh.com,aes128-ctr\n\n KexAlgorithms sntrup761x25519-sha512@openssh.com,gss-curve25519-sha256-,curve25519-sha256,curve25519-sha256@libssh.org,gss-group16-sha512-,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256\n\n MACs hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com\n\n RequiredRSASize 3072\n\n HostKeyAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\n CASignatureAlgorithms sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\n GSSAPIKexAlgorithms gss-curve25519-sha256-,gss-group16-sha512-\n\n HostbasedAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256-cert-v01@openssh.com,rsa-sha2-256\n\n PubkeyAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256-cert-v01@openssh.com,rsa-sha2-256\n\n" >> ~/.ssh/config')
+
+    @staticmethod
+    def rocky_9_client() -> None:
+        print("\033[1mRun the following in a terminal to harden the SSH client for the local user:\033[0m")
+        print(" ")
+        print(r'mkdir -p -m 0700 ~/.ssh; echo -e "\nHost *\n Ciphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-gcm@openssh.com,aes128-ctr\n\n KexAlgorithms sntrup761x25519-sha512@openssh.com,gss-curve25519-sha256-,curve25519-sha256,curve25519-sha256@libssh.org,gss-group16-sha512-,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256\n\n MACs hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com\n\n RequiredRSASize 3072\n\n HostKeyAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\n CASignatureAlgorithms sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\n GSSAPIKexAlgorithms gss-curve25519-sha256-,gss-group16-sha512-\n\n HostbasedAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256-cert-v01@openssh.com,rsa-sha2-256\n\n PubkeyAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256-cert-v01@openssh.com,rsa-sha2-256\n\n" >> ~/.ssh/config')
+
+    @staticmethod
+    def ubuntu_2404_mint_22_client() -> None:
+        print("\033[1mRun the following in a terminal to harden the SSH client for the local user:\033[0m")
+        print(" ")
+        print(r'mkdir -p -m 0700 ~/.ssh; echo -e "\nHost *\n Ciphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-gcm@openssh.com,aes128-ctr\n\n KexAlgorithms sntrup761x25519-sha512@openssh.com,gss-curve25519-sha256-,curve25519-sha256,curve25519-sha256@libssh.org,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256,gss-group16-sha512-,diffie-hellman-group16-sha512\n\n MACs hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,umac-128-etm@openssh.com\n\n RequiredRSASize 3072\n\n HostKeyAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\n CASignatureAlgorithms sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\n GSSAPIKexAlgorithms gss-curve25519-sha256-,gss-group16-sha512-\n\n HostbasedAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\n PubkeyAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\n" >> ~/.ssh/config')
+
+    @staticmethod
+    def ubuntu_2204_mint_21_client() -> None:
+        print("\033[1mRun the following in a terminal to harden the SSH client for the local user:\033[0m")
+        print(" ")
+        print(r'mkdir -p -m 0700 ~/.ssh; echo -e "\nHost *\n Ciphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-gcm@openssh.com,aes128-ctr\n\n KexAlgorithms sntrup761x25519-sha512@openssh.com,gss-curve25519-sha256-,curve25519-sha256,curve25519-sha256@libssh.org,gss-group16-sha512-,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256\n\n MACs hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com\n\n HostKeyAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\n CASignatureAlgorithms sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\n GSSAPIKexAlgorithms gss-curve25519-sha256-,gss-group16-sha512-\n\n HostbasedAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256-cert-v01@openssh.com,rsa-sha2-256\n\n PubkeyAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256-cert-v01@openssh.com,rsa-sha2-256\n\n" >> ~/.ssh/config')
+
+    @staticmethod
+    def ubuntu_2004_mint_20_client() -> None:
+        print("\033[1mRun the following in a terminal to harden the SSH client for the local user:\033[0m")
+        print(" ")
+        print(r'mkdir -p -m 0700 ~/.ssh; echo -e "\nHost *\n Ciphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr\n KexAlgorithms curve25519-sha256,curve25519-sha256@libssh.org,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256\n MACs hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com\n HostKeyAlgorithms ssh-ed25519,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,sk-ssh-ed25519-cert-v01@openssh.com,rsa-sha2-256,rsa-sha2-256-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-512-cert-v01@openssh.com\n" >> ~/.ssh/config')
+
+
+    # Server Configurations
+
+
+    @staticmethod
+    def server_modern_common() -> None:
+        print("\033[1mRe-generate the ED25519 and RSA keys\033[0m")
+        print(" ")
+        print("rm /etc/ssh/ssh_host_*")
+        print(r'ssh-keygen -t rsa -b 4096 -f /etc/ssh/ssh_host_rsa_key -N ""')
+        print(r'ssh-keygen -t ed25519 -f /etc/ssh/ssh_host_ed25519_key -N ""')
+        print(" ")
+        print("\033[1mRemove small Diffie-Hellman moduli\033[0m")
+        print(" ")
+        print(r"awk '$5 >= 3071' /etc/ssh/moduli > /etc/ssh/moduli.safe")
+        print("mv /etc/ssh/moduli.safe /etc/ssh/moduli")
+        print(" ")
+        print("\033[1mEnable the ED25519 and RSA keys\033[0m")
+        print(" ")
+        print("Enable the ED25519 and RSA HostKey directives in the /etc/ssh/sshd_config file:")
+        print(" ")
+        print(r'echo -e "\nHostKey /etc/ssh/ssh_host_ed25519_key\nHostKey /etc/ssh/ssh_host_rsa_key" >> /etc/ssh/sshd_config')
+        print(" ")
+
+    @staticmethod
+    def server_legacy_common() -> None:
+        print("\033[1mRe-generate the ED25519 and RSA keys\033[0m")
+        print(" ")
+        print(r"rm /etc/ssh/ssh_host_*")
+        print(r'ssh-keygen -t rsa -b 4096 -f /etc/ssh/ssh_host_rsa_key -N ""')
+        print(r'ssh-keygen -t ed25519 -f /etc/ssh/ssh_host_ed25519_key -N ""')
+        print(" ")
+        print("\033[1mRemove small Diffie-Hellman moduli\033[0m")
+        print(" ")
+        print(r"awk '$5 >= 3071' /etc/ssh/moduli > /etc/ssh/moduli.safe")
+        print("mv /etc/ssh/moduli.safe /etc/ssh/moduli")
+        print(" ")
+        print("\033[1mDisable the DSA and ECDSA host keys\033[0m")
+        print(" ")
+        print("Comment out the DSA and ECDSA HostKey directives in the /etc/ssh/sshd_config file:")
+        print(" ")
+        print(r"sed -i 's/^HostKey \/etc\/ssh\/ssh_host_\(dsa\|ecdsa\)_key$/\#HostKey \/etc\/ssh\/ssh_host_\1_key/g' /etc/ssh/sshd_config")
+        print(" ")
+
+    @staticmethod
+    def debian_ubuntu_rate_throttling() -> None:
+        print("\033[1mImplement connection rate throttling\033[0m")
+        print(" ")
+        print("iptables -I INPUT -p tcp --dport 22 -m state --state NEW -m recent --set")
+        print("iptables -I INPUT -p tcp --dport 22 -m state --state NEW -m recent --update --seconds 10 --hitcount 10 -j DROP")
+        print("ip6tables -I INPUT -p tcp --dport 22 -m state --state NEW -m recent --set")
+        print("ip6tables -I INPUT -p tcp --dport 22 -m state --state NEW -m recent --update --seconds 10 --hitcount 10 -j DROP")
+        print(" ")
+        print("\033[1mEnable persistence of the iptables rules across server reboots: \033[0m")
+        print(" ")
+        print("DEBIAN_FRONTEND=noninteractive apt install -q -y netfilter-persistent iptables-persistent service netfilter-persistent save")
+        print(" ")
+        print("\033[1mRestart OpenSSH server\033[0m")
+        print(" ")
+        print("service ssh restart")
+
+    @staticmethod
+    def ubuntu_server_2404() -> None:
+        print("\033[1mRestrict supported key exchange, cipher, and MAC algorithms\033[0m")
+        print(" ")
+        print(r'echo -e "# Restrict key exchange, cipher, and MAC algorithms, as per sshaudit.com\n# hardening guide.\nKexAlgorithms sntrup761x25519-sha512@openssh.com,gss-curve25519-sha256-,curve25519-sha256,curve25519-sha256@libssh.org,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256,gss-group16-sha512-,diffie-hellman-group16-sha512\n\nCiphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-gcm@openssh.com,aes128-ctr\n\nMACs hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,umac-128-etm@openssh.com\n\nRequiredRSASize 3072\n\nHostKeyAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\nCASignatureAlgorithms sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\nGSSAPIKexAlgorithms gss-curve25519-sha256-,gss-group16-sha512-\n\nHostbasedAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\nPubkeyAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256" > /etc/ssh/sshd_config.d/ssh-audit_hardening.conf')
+        print(" ")
+        print("\033[1mRestart OpenSSH server\033[0m")
+        print(" ")
+        print("service ssh restart")
+        print(" ")
+
+    @staticmethod
+    def ubuntu_server_2204() -> None:
+        print("\033[1mRestrict supported key exchange, cipher, and MAC algorithms\033[0m")
+        print(" ")
+        print(r'echo -e "# Restrict key exchange, cipher, and MAC algorithms, as per sshaudit.com\n# hardening guide.\nKexAlgorithms sntrup761x25519-sha512@openssh.com,curve25519-sha256,curve25519-sha256@libssh.org,gss-curve25519-sha256-,diffie-hellman-group16-sha512,gss-group16-sha512-,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256\n\nCiphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-gcm@openssh.com,aes128-ctr\n\nMACs hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com\n\nHostKeyAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\nCASignatureAlgorithms sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\nGSSAPIKexAlgorithms gss-curve25519-sha256-,gss-group16-sha512-\n\nHostbasedAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256-cert-v01@openssh.com,rsa-sha2-256\n\nPubkeyAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256-cert-v01@openssh.com,rsa-sha2-256" > /etc/ssh/sshd_config.d/ssh-audit_hardening.conf')
+        print(" ")
+        print("\033[1mRestart OpenSSH server\033[0m")
+        print(" ")
+        print("service ssh restart")
+        print(" ")
+
+    @staticmethod
+    def ubuntu_server_2004() -> None:
+        print("\033[1mRestrict supported key exchange, cipher, and MAC algorithms\033[0m")
+        print(" ")
+        print(r'echo -e "# Restrict key exchange, cipher, and MAC algorithms, as per sshaudit.com\n# hardening guide.\nKexAlgorithms sntrup761x25519-sha512@openssh.com,gss-curve25519-sha256-,curve25519-sha256,curve25519-sha256@libssh.org,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256,gss-group16-sha512-,diffie-hellman-group16-sha512\n\nCiphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-gcm@openssh.com,aes128-ctr\n\nMACs hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,umac-128-etm@openssh.com\n\nRequiredRSASize 3072\n\nHostKeyAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\nCASignatureAlgorithms sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\nGSSAPIKexAlgorithms gss-curve25519-sha256-,gss-group16-sha512-\n\nHostbasedAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\nPubkeyAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256" > /etc/ssh/sshd_config.d/ssh-audit_hardening.conf')
+        print(" ")
+        print("\033[1mRestart OpenSSH server\033[0m")
+        print(" ")
+        print("service ssh restart")
+        print(" ")
+
+    @staticmethod
+    def ubuntu_server_1804() -> None:
+        print("\033[1mRestrict supported key exchange, cipher, and MAC algorithms\033[0m")
+        print(" ")
+        print(r'echo -e "# Restrict key exchange, cipher, and MAC algorithms, as per sshaudit.com\n# hardening guide.\nKexAlgorithms curve25519-sha256,curve25519-sha256@libssh.org,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256\nCiphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr\nMACs hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com\nHostKeyAlgorithms ssh-ed25519,ssh-ed25519-cert-v01@openssh.com" >> /etc/ssh/sshd_config')
+        print(" ")
+        print("\033[1mRestart OpenSSH server\033[0m")
+        print(" ")
+        print("service ssh restart")
+        print(" ")
+
+    @staticmethod
+    def bookworm_server() -> None:
+        print("\033[1mRestrict supported key exchange, cipher, and MAC algorithms\033[0m")
+        print(" ")
+        print(r'echo -e "# Restrict key exchange, cipher, and MAC algorithms, as per sshaudit.com\n# hardening guide.\nKexAlgorithms sntrup761x25519-sha512@openssh.com,gss-curve25519-sha256-,curve25519-sha256,curve25519-sha256@libssh.org,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256,gss-group16-sha512-,diffie-hellman-group16-sha512\n\nCiphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-gcm@openssh.com,aes128-ctr\n\nMACs hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,umac-128-etm@openssh.com\n\nRequiredRSASize 3072\n\nHostKeyAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\nCASignatureAlgorithms sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\nGSSAPIKexAlgorithms gss-curve25519-sha256-,gss-group16-sha512-\n\nHostbasedAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\nPubkeyAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256" > /etc/ssh/sshd_config.d/ssh-audit_hardening.conf')
+        print(" ")
+        print("\033[1mRestart OpenSSH server\033[0m")
+        print(" ")
+        print("service ssh restart")
+        print(" ")
+
+    @staticmethod
+    def bullseye_server() -> None:
+        print("\033[1mRestrict supported key exchange, cipher, and MAC algorithms\033[0m")
+        print(" ")
+        print(r'echo -e "# Restrict key exchange, cipher, and MAC algorithms, as per sshaudit.com\n# hardening guide.\nKexAlgorithms sntrup761x25519-sha512@openssh.com,curve25519-sha256,curve25519-sha256@libssh.org,gss-curve25519-sha256-,diffie-hellman-group16-sha512,gss-group16-sha512-,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256\n\nCiphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-gcm@openssh.com,aes128-ctr\n\nMACs hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com\n\nHostKeyAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\nCASignatureAlgorithms sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\nGSSAPIKexAlgorithms gss-curve25519-sha256-,gss-group16-sha512-\n\nHostbasedAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256-cert-v01@openssh.com,rsa-sha2-256\n\nPubkeyAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256-cert-v01@openssh.com,rsa-sha2-256" > /etc/ssh/sshd_config.d/ssh-audit_hardening.conf')
+        print(" ")
+        print("\033[1mRestart OpenSSH server\033[0m")
+        print(" ")
+        print("service ssh restart")
+        print(" ")
+
+    @staticmethod
+    def rocky_9_server() -> None:
+        print("\033[1mRestrict supported key exchange, cipher, and MAC algorithms\033[0m")
+        print(" ")
+        print(r'echo -e "# Restrict key exchange, cipher, and MAC algorithms, as per sshaudit.com\n# hardening guide.\nKexAlgorithms sntrup761x25519-sha512@openssh.com,curve25519-sha256,curve25519-sha256@libssh.org,gss-curve25519-sha256-,diffie-hellman-group16-sha512,gss-group16-sha512-,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256\n\nCiphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-gcm@openssh.com,aes128-ctr\n\nMACs hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com\n\nHostKeyAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\nRequiredRSASize 3072\n\nCASignatureAlgorithms sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\nGSSAPIKexAlgorithms gss-curve25519-sha256-,gss-group16-sha512-\n\nHostbasedAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256-cert-v01@openssh.com,rsa-sha2-256\n\nPubkeyAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\n" > /etc/crypto-policies/back-ends/opensshserver.config')
+        print(" ")
+        print("\033[1mRestart OpenSSH server\033[0m")
+        print(" ")
+        print("systemctl restart sshd")
+        print(" ")
+        print("\033[1mImplement connection rate throttling\033[0m")
+        print(" ")
+        print("firewall-cmd --permanent --direct --add-rule ipv4 filter INPUT 0 -p tcp --dport 22 -m state --state NEW -m recent --set")
+        print("firewall-cmd --permanent --direct --add-rule ipv4 filter INPUT 1 -p tcp --dport 22 -m state --state NEW -m recent --update --seconds 10 --hitcount 10 -j DROP")
+        print("firewall-cmd --permanent --direct --add-rule ipv6 filter INPUT 0 -p tcp --dport 22 -m state --state NEW -m recent --set")
+        print("firewall-cmd --permanent --direct --add-rule ipv6 filter INPUT 1 -p tcp --dport 22 -m state --state NEW -m recent --update --seconds 10 --hitcount 10 -j DROP")
+        print(" ")
+        print("\033[1mReload firewalld to enable new rules:\033[0m")
+        print(" ")
+        print("systemctl reload firewalld")
+        print(" ")
+
+    @staticmethod
+    def amazon_server_2023() -> None:
+        print("\033[1mRestrict supported key exchange, cipher, and MAC algorithms\033[0m")
+        print(" ")
+        print(r'echo -e "# Restrict key exchange, cipher, and MAC algorithms, as per sshaudit.com\n# hardening guide.\nKexAlgorithms sntrup761x25519-sha512@openssh.com,curve25519-sha256,curve25519-sha256@libssh.org,gss-curve25519-sha256-,diffie-hellman-group16-sha512,gss-group16-sha512-,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256\n\nCiphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-gcm@openssh.com,aes128-ctr\n\nMACs hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com\n\nHostKeyAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\nCASignatureAlgorithms sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\nGSSAPIKexAlgorithms gss-curve25519-sha256-,gss-group16-sha512-\n\nHostbasedAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256-cert-v01@openssh.com,rsa-sha2-256\n\nPubkeyAcceptedAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256\n\n" > /etc/crypto-policies/back-ends/opensshserver.config')
+        print(" ")
+        print("\033[1mRestart OpenSSH server\033[0m")
+        print(" ")
+        print("systemctl restart sshd")
+        print(" ")
+        print("\033[1mImplement connection rate throttling\033[0m")
+        print(" ")
+        print("dnf install -y iptables")
+        print("iptables -I INPUT -p tcp --dport 22 -m state --state NEW -m recent --set")
+        print("iptables -I INPUT -p tcp --dport 22 -m state --state NEW -m recent --update --seconds 10 --hitcount 10 -j DROP")
+        print("ip6tables -I INPUT -p tcp --dport 22 -m state --state NEW -m recent --set")
+        print("ip6tables -I INPUT -p tcp --dport 22 -m state --state NEW -m recent --update --seconds 10 --hitcount 10 -j DROP")
+        print(" ")
+        print("\033[1mEnable persistence of the iptables rules across server reboots:\033[0m")
+        print(" ")
+        print("dnf install -y iptables-services")
+        print("iptables-save > /etc/sysconfig/iptables")
+        print("ip6tables-save > /etc/sysconfig/ip6tables")
+        print("systemctl enable iptables")
+        print("systemctl enable ip6tables")
+        print("systemctl start iptables")
+        print("systemctl start ip6tables")
+        print(" ")
+
+    @staticmethod
+    def print_ver_changelog(policy_name: str) -> None:
+        '''Prints ssh-audit version and change log for a supported configuration'''
+
+        for key_name, policy in BUILTIN_GUIDES.items():
+            if policy_name in key_name:
+
+                policy_struct = policy
+                policy_name_without_version = policy_name.split('(')[0]
+                name = policy_name_without_version  # pylint: disable=protected-access
+                changelog_struct = policy_struct['changelog']  # pylint: disable=protected-access
+                print(" ")
+                print(f"\033[1mssh-audit Version : {VERSION}\033[0m")
+                print(" ")
+                print(f"\033[1mLocating configuration for {name}\033[0m")
+                print(" ")
+                print("\033[1mChange Log :\033[0m")
+                for date, change in changelog_struct.items():
+                    print(f"\033[1m{date} : {change}\033[0m")
+                print(" ")

src/ssh_audit/ssh_audit.py

@@ -53,6 +53,7 @@ from ssh_audit.gextest import GEXTest
 from ssh_audit.hostkeytest import HostKeyTest
 from ssh_audit.outputbuffer import OutputBuffer
 from ssh_audit.policy import Policy
+from ssh_audit.hardeningguides import PrintHardeningGuides
 from ssh_audit.product import Product
 from ssh_audit.protocol import Protocol
 from ssh_audit.software import Software
@@ -793,7 +794,11 @@ def process_commandline(out: OutputBuffer, args: List[str]) -> 'AuditConf':  # p
     parser.add_argument("--skip-rate-test", action="store_true", dest="skip_rate_test", default=False, help="skip the connection rate test during standard audits (used to safely infer whether the DHEat attack is viable)")
     parser.add_argument("--threads", action="store", dest="threads", metavar="N", type=int, default=32, help="number of threads to use when scanning multiple targets (-T/--targets) (default: %(default)s)")
 
-    # The mandatory target option.  Or rather, mandatory when -L, -T, or --lookup are not used.
+    # Print Suggested Configurations from : https://www.ssh-audit.com/hardening_guides.html
+    parser.add_argument("--get-hardening-guides", nargs="*", action="append", metavar="OS Ver Client/Server", dest="get_hardening_guides", type=str, default=None, help="Print suggested server or client configurations. Usage Example : Ubuntu 2404 Server")
+    parser.add_argument("--list-hardening-guides", action="store_true", dest="list_hardening_guides", default=False, help="List supported server and client configurations.")
+
+    # The mandatory target option.  Or rather, mandatory when -L, -T, --lookup or --print-config are not used.
     parser.add_argument("host", nargs="?", action="store", type=str, default="", help="target hostname or IPv4/IPv6 address")
 
     # If no arguments were given, print the help and exit.
@@ -805,6 +810,27 @@ def process_commandline(out: OutputBuffer, args: List[str]) -> 'AuditConf':  # p
     try:
         argument = parser.parse_args(args=args)
 
+        if argument.list_hardening_guides is True:
+            PrintHardeningGuides.supported_varient()
+
+        if argument.get_hardening_guides is not None:
+            print_guides = (getattr(argument, 'get_hardening_guides'))[0]
+            arg_len = len(print_guides)
+            if arg_len <= 2:
+                user_arg = ""
+                for i in range(arg_len):
+                    user_arg = user_arg + " " + str(print_guides[i])
+                print(f"\033[1mUnsupported configuration : {user_arg}\033[0m")
+                PrintHardeningGuides.supported_varient()
+            else:
+                print_guides = (getattr(argument, 'get_hardening_guides'))[0]
+                os_type = print_guides[0]
+                os_ver = print_guides[1]
+                clientserver = print_guides[2]
+
+                PrintHardeningGuides(os_type, os_ver, clientserver)
+
+
         # Set simple flags.
         aconf.client_audit = argument.client_audit
         aconf.ipv4 = argument.ipv4
@@ -889,8 +915,8 @@ def process_commandline(out: OutputBuffer, args: List[str]) -> 'AuditConf':  # p
         parser.print_help()
         sys.exit(exitcodes.UNKNOWN_ERROR)
 
-    if argument.host == "" and argument.client_audit is False and argument.targets is None and argument.list_policies is False and argument.lookup is None and argument.manual is False:
+    if argument.host == "" and argument.client_audit is False and argument.targets is None and argument.list_policies is False and argument.lookup is None and argument.manual is False and argument.get_hardening_guides is None:
-        out.fail("target host must be specified, unless -c, -m, -L, -T, or --lookup are used", write_now=True)
+        out.fail("target host must be specified, unless -c, -m, -L, -T, --lookup or --print-configuration are used", write_now=True)
         sys.exit(exitcodes.UNKNOWN_ERROR)
 
     if aconf.manual:

test/test_hardeningguides.py

@@ -0,0 +1,41 @@
+import pytest
+from ssh_audit.ssh_audit import process_commandline
+
+
+# pylint: disable=attribute-defined-outside-init
+class TestHardeningGuides:
+    @pytest.fixture(autouse=True)
+    def init(self, ssh_audit):
+        self.OutputBuffer = ssh_audit.OutputBuffer()
+        self.process_commandline = process_commandline
+
+    @staticmethod
+    def _test_conf(conf, **kwargs):
+        options = {
+            'get_hardening_guides': '',
+        }
+        for k, v in kwargs.items():
+            options[k] = v
+        assert conf.get_hardening_guides == options['get_hardening_guides']
+
+    def test_printconfig_conf_process_commandline(self):
+        # pylint: disable=too-many-statements
+        c = lambda x: self.process_commandline(self.OutputBuffer, x.split())  # noqa
+        with pytest.raises(SystemExit):
+            conf = c('')
+        with pytest.raises(SystemExit):
+            conf = c('--get-hardening-guides')
+            self._test_conf(conf)
+        with pytest.raises(SystemExit):
+            conf = c('--list-hardening-guides')
+            self._test_conf(conf)
+
+        for vendor in ["Amazon", "Debian", "Rocky", "Mint", "Ubuntu", "NoOS", " "]:
+            vendor = vendor
+            for os_ver in ["2404", "2204", "2004", "1804", "2023", "22", "21", "20", "9", "Bookworm", "Bullseye", "NoVersion", ""]:
+                os_ver = os_ver
+                for cs_type in ["Client", "Server", "Mistake", ""]:
+                    cs_type = cs_type
+                    with pytest.raises(SystemExit):
+                        conf = c(f'--get-hardening-guides {vendor} {os_ver} {cs_type}')
+                        self._test_conf(conf)