Ensure the 'addressExcludeList' attribute is set to a whitelist of hostnames

MediumLevel 1Manual reviewwebsphere

Description

IP addresses can be allowed or blocked from creating inbound TCP connections to different HTTP endpoints. The benchmark marks this recommendation Manual; TMAegis reports it as a manual review item with the audit steps.

How it is checked

Audit method: Manual review

This recommendation cannot be checked automatically. A scan lists it with these instructions when you pass --include-manual.

Ensure the addressExcludeList attribute is set to a list of hostnames in all tcpOptions elements in the Liberty configuration. grep -w -R -i 'addressExcludeList' ${server.config.dir}

How it is fixed

Fix method: Guidance or infrastructure patch

Add the addressExcludeList attribute to all tcpOptions elements to ${server.config.dir}/configDropins/overrides/*.xml and set it to a comma- separated list of IP addresses. <tcpOptions addressExcludeList="254.1.0.9,*.1.255.0" />

Properties

Operating systems: Any
Tags: webspheremanual-review
Reference: CIS IBM WebSphere Liberty Benchmark v1.0.0 - 7.3 Ensure the 'addressExcludeList' attribute is set to a whitelist of hostnames