The system must set maximum number of incoming connections to 1024.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| low | V-216142 | SRG-OS-000480 | SOL-11.1-050120 | SV-216142r959010_rule | 2026-02-19 | 3 |
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.
ℹ️ Check
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
The Network Management profile is required.
Configure maximum number of incoming connections.
# pfexec ipadm set-prop -p _conn_req_max_q=1024 tcp