The Photon operating system must configure Secure Shell (SSH) to restrict AllowTcpForwarding.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-258883 | SRG-OS-000480-GPOS-00227 | PHTN-40-000220 | SV-258883r991589_rule | 2024-07-11 | 2 |
| Description |
|---|
| While enabling 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 to verify the running configuration of sshd: # sshd -T|&grep -i AllowTcpForwarding Example result: allowtcpforwarding no If "AllowTcpForwarding" is not set to "no", 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 |