tool for ssh server auditing

 ssh-audit is a tool for ssh server auditing with the following
 features:
 .
  * SSH1 and SSH2 protocol server support;
  * grab banner, recognize device or software and operating system,
    detect compression;
  * gather key-exchange, host-key, encryption and message authentication
    code algorithms;
  * output algorithm information (available since, removed/disabled,
    unsafe/weak/legacy, etc);
  * output algorithm recommendations (append or remove based on
    recognized software version);
  * output security information (related issues, assigned CVE list,
    etc);
  * analyze SSH version compatibility based on algorithm information;
  * historical information from OpenSSH, Dropbear SSH and libssh;
  * no dependencies, compatible with Python 2.6+, Python 3.x and PyPy;