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Check: SOL-11.1-050110

Solaris 11 SPARC STIG: SOL-11.1-050110 (in versions v2 r10 through v1 r10)

Title

The system must set maximum number of half-open TCP connections to 4096. (Cat II impact)

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

Additional Identifiers

Rule ID: SV-216378r603267_rule

Vulnerability ID: V-216378

Group Title: SRG-OS-000480

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CCIs

CCIs tied to check.

Number	Definition
CCI-000366	The organization implements the security configuration settings.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
CM-6	Configuration Settings