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The AIX SSH daemon must be configured for IP filtering.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-215295 | AIX7-00-002112 | SV-215295r508663_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 |
|---|---|
| IBM AIX 7.x Security Technical Implementation Guide | 2021-06-16 |
Details
| Check Text ( C-16493r294336_chk ) |
|---|
| 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. |
| Fix Text (F-16491r294337_fix) |
|---|
| 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 |