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V-216377

CAT III (Low)

The system must disable TCP reverse IP source routing.

Rule ID

SV-216377r959010_rule

STIG

Solaris 11 SPARC Security Technical Implementation Guide

Version

V3R5

CCIs

CCI-000366

Discussion

If enabled, reverse IP source routing would allow an attacker to more easily complete a three-way TCP handshake and spoof new connections.

Check Content

Determine if TCP reverse IP source routing is disabled. 

# ipadm show-prop -p _rev_src_routes -co current tcp

If the output of this command is not "0", this is a finding.

Fix Text

The Network Management profile is required.

Disable reverse source routing.

# pfexec ipadm set-prop -p _rev_src_routes=0 tcp