AIX must turn off TCP forwarding for the SSH daemon.
An XCCDF Rule
Description
<VulnDiscussion>SSH TCP connection forwarding provides a mechanism to establish TCP connections proxied by the SSH server. This function can provide similar convenience to a Virtual Private Network (VPN) with the similar risk of providing a path to circumvent firewalls and network ACLs.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-215301r991589_rule
- Severity
- Medium
- References
- Updated
Remediation - Manual Procedure
Edit the "/etc/sshd/sshd_config" file to add the following line and save the change:
AllowTcpForwarding no
Restart the SSH daemon:
# stopsrc -s sshd
# startsrc -s sshd