The SSH client must be configured to only use FIPS 140-2 approved ciphers.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22461	GEN005510	SV-26754r1_rule	DCNR-1	Medium

Description
DoD information systems are required to use FIPS 140-2 approved ciphers. SSHv2 ciphers meeting this requirement are 3DES and AES.

STIG	Date
Draft AIX Security Technical Implementation Guide	2011-08-17

Details

Check Text ( C-27763r1_chk )
Check the SSH client configuration for allowed ciphers. # grep -i ciphers /etc/ssh/ssh_config | grep -v '^#' If no lines are returned, the returned ciphers list contains any cipher that does not start with 3des or aes, this is a finding.

Fix Text (F-24004r1_fix)
Edit the SSH client configuration and remove any ciphers not starting with 3des or aes. If necessary, add a Ciphers line.