The F5 BIG-IP appliance must be configured to filter outbound traffic on all internal interfaces.

If outbound communications traffic is not filtered, hostile activity intended to harm other networks or packets from networks destined to unauthorized networks may not be detected and prevented.

Access control policies and access control lists implemented on devices, such as firewalls, that control the flow of network traffic ensure the flow of traffic is only allowed from authorized sources to authorized destinations. Networks with different levels of trust (e.g., the internet) must be kept separated.

This requirement addresses the binding of the egress filter to the interface/zone rather than the content of the egress filter.

From the BIG-IP GUI: 1. Security. 2. Network Firewall. 3. Policies. 4. <Policy Name>

If configured rules in the policy do not filter outbound traffic on all internal interface, this is a finding.

From the BIG-IP GUI: 1. Security. 2. Network Firewall. 3. Policies. 4. <Policy Name> 5. Configure rules to using packet headers and packet attributes, including source and destination IP addresses and ports to filter outbound traffic on all internal interfaces.