From Solaris 11 SPARC Security Technical Implementation Guide
Part of SRG-OS-999999
Associated with: CCI-000366
Source-routed packets allow the source of the packet to suggest that routers forward the packet along a different path than configured on the router, which can be used to bypass network security measures.
The IP Filter Management profile is required. Check the system for an IPF rule blocking outgoing source-routed packets. # ipfstat -o Examine the list for rules such as: block out log quick from any to any with opt lsrr block out log quick from any to any with opt ssrr If the listed rules do not block both lsrr and ssrr options, this is a finding.
The root role is required. # pfedit /etc/ipf/ipf.conf Add rules to block outgoing source-routed packets, such as: block out log quick all with opt lsrr block out log quick all with opt ssrr Reload the IPF rules. # ipf -Fa -A -f /etc/ipf/ipf.conf
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