The system must disable TCP reverse IP source routing.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| low | V-216377 | SRG-OS-000480 | SOL-11.1-050100 | SV-216377r959010_rule | 2024-11-25 | 3 |
| Description |
|---|
| If enabled, reverse IP source routing would allow an attacker to more easily complete a three-way TCP handshake and spoof new connections. |
| ℹ️ Check |
|---|
| Determine if TCP reverse IP source routing is disabled. # ipadm show-prop -p _rev_src_routes -co current tcp If the output of this command is not "0", this is a finding. |
| ✔️ Fix |
|---|
| The Network Management profile is required. Disable reverse source routing. # pfexec ipadm set-prop -p _rev_src_routes=0 tcp |