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

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-266265F5BI-FW-300030SV-266265r1024583_ruleCCI-002403medium
Description
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.
STIGDate
F5 BIG-IP TMOS Firewall Security Technical Implementation Guide2024-09-09

Related Frameworks

1 mapping across 3 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (2) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

NET-03Boundary Protection
0.50
NET-04.1Deny Traffic by Default & Allow Traffic by Exception
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (8) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

CM-6Configuration Settings
1.00
SC-24Fail in Known State
1.00
SC-47Alternate Communications Paths
1.00
SC-5Denial-of-service Protection
1.00
SC-7Boundary Protection
1.00
SC-7(11)Restrict Incoming Communications Traffic
1.00
SC-7(29)Separate Subnets to Isolate Functions
1.00
SC-7(5)Deny by Default — Allow by Exception
1.00
CCI1 mapping
CCI-002403
1.00

Details

Check Text (C-266265r1024583_chk)

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.

Fix Text (F-70092r1024339_fix)

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.