The system must set maximum number of incoming connections to 1024.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-48211	SOL-11.1-050120	SV-61083r1_rule		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	2019-12-18

Details

Check Text ( C-50643r1_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-51819r1_fix)
The Network Management profile is required. Configure maximum number of incoming connections. # pfexec ipadm set-prop -p _conn_req_max_q=1024 tcp