The Photon operating system must configure sshd to restrict AllowTcpForwarding.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-256587 | SRG-OS-000480-GPOS-00227 | PHTN-30-000119 | SV-256587r991589_rule | 2024-12-16 | 1 |
| Description |
|---|
| While enabling Transmission Control Protocol (TCP) tunnels is a valuable function of sshd, this feature is not appropriate for use on single-purpose appliances. |
| ℹ️ Check |
|---|
| At the command line, run the following command: # sshd -T|&grep -i AllowTcpForwarding Expected result: allowtcpforwarding no If the output does not match the expected result, this is a finding. |
| ✔️ Fix |
|---|
| Navigate to and open: /etc/ssh/sshd_config Ensure the "AllowTcpForwarding" line is uncommented and set to the following: AllowTcpForwarding no At the command line, run the following command: # systemctl restart sshd.service |