Check: F5BI-AF-000223
F5 BIG-IP Advanced Firewall Manager 11.x STIG:
F5BI-AF-000223
(in version v1 r1)
Title
The BIG-IP AFM module must be configured to only allow incoming communications from authorized sources routed to authorized destinations. (Cat II impact)
Discussion
Unrestricted traffic may contain malicious traffic that poses a threat to an enclave or to other connected networks. Additionally, unrestricted traffic may transit a network, which uses bandwidth and other resources. Access control policies and access control lists implemented on devices that control the flow of network traffic (e.g., application-level firewalls and Web content filters) ensure the flow of traffic is only allowed from authorized sources to authorized destinations. Networks with different levels of trust (e.g., the Internet or CDS) must be kept separate.
Check Content
If the BIG-IP AFM module is not used to support user access control intermediary services for virtual servers, this is not applicable. Verify the BIG-IP AFM module is configured to only allow incoming communications from authorized sources routed to authorized destinations. Navigate to the BIG-IP System manager >> Local Traffic >> Virtual Servers >> Virtual Servers List tab. Select the applicable Virtual Servers(s) from the list to verify. Navigate to the Security >> Policies tab. Verify that "Network Firewall" is assigned a local Network Firewall Policy. Verify configuration of the identified Network Firewall policy: Navigate to the BIG-IP System manager >> Security >> Network Firewall >> Active Rules. Select the Network Firewall policy that was assigned to the Virtual Server. Review the configuration of the "Protocol", "Source", "Destination", and "Action" sections at a minimum to ensure that the policy is only allowing incoming communications from authorized sources enroute to authorized destinations. If the BIG-IP AFM module is not configured to only allow incoming communications from unauthorized sources routed to unauthorized destinations, this is a finding.
Fix Text
Configure the BIG-IP AFM module to only allow incoming communications from authorized sources routed to authorized destinations.
Additional Identifiers
Rule ID: SV-74355r1_rule
Vulnerability ID: V-59925
Group Title: SRG-NET-000364-ALG-000122
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-002403 |
The information system only allows incoming communications from organization-defined authorized sources routed to organization-defined authorized destinations. |
Controls
Number | Title |
---|---|
SC-7 (11) |
Restrict Incoming Communications Traffic |