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The IBM AIX 7.x Security Technical Implementation Guide (V3 R4) has 282 STIG checks. New to STIG checklists? Read What is a STIG checklist?, CKL vs CKLB, and STIG vs SCAP benchmark.
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New to STIG checklists? Read What is a STIG checklist? and CKL vs CKLB.
Note: If the installed version of OpenSSH is 6.7 or above, this requirement is not applicable.
Check the TCP wrappers configuration files to determine if SSHD is configured to use TCP wrappers using commands:
# grep sshd /etc/hosts.deny
sshd : ALL
# grep sshd /etc/hosts.allow
sshd : 10.10.20.*
If no entries are returned, the TCP wrappers are not configured for SSHD, this is a finding.
Add appropriate IP restrictions for SSH to the "/etc/hosts.deny" and/or "/etc/hosts.allow" files.
TCP Wrappers can be installed from the AIX Expansion Pack by installing fileset "netsec.options.tcpwrappers" using the following command (assume AIX Expansion Pack is mounted on /dev/cd0):
# installp -aXYgd /dev/cd0 -e /tmp/install.log netsec.options.tcpwrappers