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TCP backlog queue sizes must be set appropriately.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-23741 | GEN003601 | SV-28639r1_rule | ECSC-1 | Medium |
| Description |
|---|
| To provide some mitigation to TCP DoS attacks, the TCP backlog queue sizes must be set to at least 1280 or in accordance with product-specific guidelines. |
| STIG | Date |
|---|---|
| SOLARIS 9 X86 SECURITY TECHNICAL IMPLEMENTATION GUIDE | 2015-03-25 |
Details
| Check Text ( C-28894r1_chk ) |
|---|
| Procedure: # ndd /dev/tcp tcp_conn_req_max_q0 If the returned value is not 1280 or greater, this is a finding. Procedure: # ndd /dev/tcp tcp_conn_req_max_q If the returned value is not 1024, this is a finding. |
| Fix Text (F-25916r1_fix) |
|---|
| Procedure: # ndd -set /dev/tcp tcp_conn_req_max_q0 1280 # ndd -set /dev/tcp tcp_conn_req_max_q 1024 Ensure these commands are also present in system startup scripts. |