on a side note, you might want to disable SSH version 1 altogether by configuring: ip ssh version 2 That should disable any 'weak' algorithms. When you issue the command 'show ip ssh' it should say 'version 2' instead of '1.99' (1.99 means both version 1 and 2 are supported). 5 ...
Nessus vulnerability scanner reported – SSH Weak Key Exchange Algorithms Enabled and SSH Server CBC Mode Ciphers Enabled. The detailed message suggested that the SSH server allows key exchange algorithms which are considered weak and support Cipher Block Chaining (CBC) encryption which may allow an a...
To test if weak MAC algorithms are enabled, run the below command: AI检测代码解析 ssh-vv-oMACs=hmac-md5,hmac-md5-96,hmac-sha1,hmac-sha1-96,hmac-md5-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-sha1-etm@openssh.com,hmac-sha1-96-etm@openssh.com,umac-64-etm@openssh.com <s...
The security scan shows a week Key Key Exchange Algorithm which needs to be removed from ssh configuration:SSH Server Supports Weak Key Exchange AlgorithmsCVSS Score: 4.30Description: The server supports one or more weak key exchange algorithms. It is highly adviseable to remove weak key exchange...
One concern when disabling weak ciphers is maintaining compatibility with older systems or clients.If we remove all the legacy ciphers, we may run into connectivity issues. For example, old clients that only support those weak algorithms may not connect with a new SSH server. ...
ip ssh version 2 1. Step 4. Remove weak SSH ciphers Remove the weak CBC and 3DES algorithm encryption ciphers. Enter the following command: AI检测代码解析 ip ssh server algorithm encryption aes256-ctr aes192-ctr aes128-ctr 1. Remove the weak mac algorithms. Enter the following commands: ...
ssh-weak-message-authentication-code-algorithms (TCP 22) - hmac-sha1 You can open a TAC case with Cisco and have a TAC engineer to root into the ISE and modidied the /etc/ssh/sshd_config file as follows: Kexalgorithms curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,...
ssh 0.0.0.0 0.0.0.0 outside ssh timeout 60 ssh version 2 ssh cipher encryption custom "aes128-ctr:aes192-ctr:aes256-ctr" ssh cipher integrity medium ssh key-exchange group dh-group1-sha1 Likewise, the SSH Integrity Algorithms can be modified with the commandssh cipher integr...
2. SSH Weak MAC Algorithms Enabled - Disable MD5 and 96-bit MAC algorithmsThe following client-to-server Message Authentication Code (MAC) algorithms are supported : hmac-md5 hmac-md5-96 hmac-sha1-96 The following server-to-client Message Authentication Code (MAC) algorithms are supported : ...
2. SSH Weak MAC Algorithms Enabled - Disable MD5 and 96-bit MAC algorithmsThe following client-to-server Message Authentication Code (MAC) algorithms are supported : hmac-md5 hmac-md5-96 hmac-sha1-96 The following server-to-client Message Authentication Code (MAC) algorithms are supported : ...