The system must set maximum number of incoming connections to 1024.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-216142 | SOL-11.1-050120 | SV-216142r959010_rule | CCI-000366 | low |
| Description | ||||
| This setting controls the maximum number of incoming connections that can be accepted on a TCP port limiting exposure to denial of service attacks. | ||||
| STIG | Date | |||
| Solaris 11 X86 Security Technical Implementation Guide | 2025-05-05 | |||
Details
Check Text (C-216142r959010_chk)
Determine if the maximum number of incoming connections is set to 1024.
# ipadm show-prop -p _conn_req_max_q -co current tcp
If the value returned is smaller than "1024", this is a finding.
In environments where connection numbers are high, such as a busy web server, this value may need to be increased.
Fix Text (F-17378r372809_fix)
The Network Management profile is required.
Configure maximum number of incoming connections.
# pfexec ipadm set-prop -p _conn_req_max_q=1024 tcp