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SSH server auditing: banner, key exchange, encryption, compatibility, security...

- 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