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Check: GEN008540

HP-UX 11.23 STIG: GEN008540 (in version v1 r8)

Title

The system's local firewall must implement a deny-all, allow-by-exception policy. (Cat II impact)

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

Additional Identifiers

Rule ID: SV-26977r1_rule

Vulnerability ID: V-22583

Group Title: GEN008540

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CCIs

CCIs tied to check.

Number	Definition
CCI-001109	The information system at managed interfaces denies network communications traffic by default and allows network communications traffic by exception (i.e., deny all, permit by exception).

Controls

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

Number	Title
SC-7 (5)	Deny By Default / Allow By Exception