AIX must turn off TCP forwarding for the SSH daemon.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-215301 | AIX7-00-002118 | SV-215301r991589_rule | CCI-000366 | medium |
| Description | ||||
| 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. | ||||
| STIG | Date | |||
| IBM AIX 7.x Security Technical Implementation Guide | 2024-08-16 | |||
Related Frameworks
4 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
CM-6
1.00
- DISA · 3 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1712 mappings
3.4.1
1.00
- DISA · 3 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
3.4.2
1.00
- DISA · 3 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
CCI1 mapping
CCI-000366
1.00
- DISA · 3 · disa_xccdf · related
Details
Check Text (C-215301r991589_chk)
If TCP forwarding is approved for use by the ISSO, this is not applicable.
Check the SSH daemon configuration for the "AllowTcpForwarding" directive using command:
# grep -i AllowTcpForwarding /etc/ssh/sshd_config | grep -v '^#'
AllowTcpForwarding no
If the setting is not present or the setting is "yes", this is a finding.
Fix Text (F-16497r294355_fix)
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