The system must set maximum number of half-open TCP connections to 4096.

From Solaris 11 SPARC Security Technical Implementation Guide

Associated with: CCI-000366

SV-61079r1_rule The system must set maximum number of half-open TCP connections to 4096.

Vulnerability discussion

This setting controls how many half-open connections can exist for a TCP port.It is necessary to control the number of completed connections to the system to provide some protection against denial of service attacks.

Check content

Determine if the number of half open TCP connections is set to 4096. # ipadm show-prop -p _conn_req_max_q0 -co current tcp If the value of "4096" is not returned, this is a finding.

Fix text

The Network Management profile is required Configure maximum TCP connections for IPv4 and IPv6. # pfexec ipadm set-prop -p _conn_req_max_q0=4096 tcp

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.