The system's local firewall must implement a deny-all, allow-by-exception policy.

From HP-UX 11.31 Security Technical Implementation Guide

Associated with IA controls: ECSC-1

Associated with: CCI-001109

SV-26977r1_rule The system's local firewall must implement a deny-all, allow-by-exception policy.

Vulnerability discussion

A local firewall protects the system from exposing unnecessary or undocumented network services to the local enclave. If a system within the enclave is compromised, firewall protection on an individual system continues to protect it from attack.

Check content

Check the firewall rules for a default deny rule. # ipfstat -i | sed -e 's/^[ \t]*//' | tr '\011' ' ' | tr -s ' ' | grep -v "^#" | grep "block" An example of a default deny rule: block in log quick on ne3 from any to any If there is no default deny rule, this is a finding.

Fix text

Edit /etc/opt/ipf/ipf.conf and add a default deny rule and restart the ipfilter service. # /sbin/init.d/ipfboot stop # /sbin/init.d/ipfboot start

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