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The SSH daemon must be configured for IP filtering.


Overview

Finding ID Version Rule ID IA Controls Severity
V-12022 GEN005540 SV-46108r1_rule Medium
Description
The SSH daemon must be configured for IP filtering to provide a layered defense against connection attempts from unauthorized addresses.
STIG Date
SUSE Linux Enterprise Server v11 for System z 2016-12-20

Details

Check Text ( C-43365r1_chk )
Check the TCP wrappers configuration files to determine if sshd is configured to use TCP wrappers.

Procedure:
# grep sshd /etc/hosts.deny
# grep sshd /etc/hosts.allow

If no entries are returned, the TCP wrappers are not configured for sshd, this is a finding.
Fix Text (F-39449r1_fix)
Add appropriate IP restrictions for SSH to the /etc/hosts.deny and/or /etc/hosts.allow files.