5.2.2 Ensure SSH Protocol is set to 2 (Scored)
Profile Applicability
Level 1 - Server Level 1 - Workstation
Description
SSH supports two different and incompatible protocols: SSH1 and SSH2. SSH1 was the original protocol and was subject to security issues. SSH2 is more advanced and secure.
Rationale
SSH v1 suffers from insecurities that do not affect SSH v2.
Audit
Run the following command and verify that output matches:
# grep "^Protocol" /etc/ssh/sshd_config Protocol 2
Remediation
Edit the /etc/ssh/sshd_config
file to set the parameter as follows:
Protocol 2