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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22458	GEN005505	SV-26751r1_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-27760r1_chk )
Check the SSH daemon configuration for allowed ciphers. # grep -i ciphers /etc/ssh/sshd_config | grep -v '^#' If no lines are returned, or the returned ciphers list contains any cipher not starting with 3des or aes, this is a finding.

Fix Text (F-24001r1_fix)
Edit the SSH daemon configuration and remove any ciphers not starting with 3des or aes. If necessary, add a Ciphers line.