TOSS 5 must not have unauthorized IP tunnels configured.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-282680 | SRG-OS-000480-GPOS-00227 | TOSS-05-000206 | SV-282680r1201020_rule | 2026-04-01 | 1 |
Description
IP tunneling mechanisms can be used to bypass network filtering. If tunneling is required, it must be documented with the information system security officer (ISSO).
ℹ️ Check
Verify TOSS 5 does not have unauthorized IP tunnels configured.
Determine if the "IPsec" service is active using the following command:
$ systemctl status ipsec
ipsec.service - Internet Key Exchange (IKE) Protocol Daemon for IPsec
Loaded: loaded (/usr/lib/systemd/system/ipsec.service; disabled)
Active: inactive (dead)
If the "IPsec" service is active, check for configured IPsec connections ("conn"), using the following command:
$ grep -rni conn /etc/ipsec.conf /etc/ipsec.d/
Verify any returned results are documented with the ISSO.
If the IPsec tunnels are active and not approved, this is a finding.
✔️ Fix
Remove all unapproved tunnels from the system or document them with the ISSO.