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  4. F5BI-LT-000067 – The BIG-IP Core implementation must be configured so that only functions, ports, protocols, and/or services that are documented for the server/application for which the virtual servers are providing connectivity.
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F5BI-LT-000067 – The BIG-IP Core implementation must be configured so that only functions, ports, protocols, and/or services that are documented for the server/application for which the virtual servers are providing connectivity.

Details

Information systems are capable of providing a wide variety of functions (capabilities or processes) and services. Some of these functions and services are installed and enabled by default. The organization must determine which functions and services are required to perform the content filtering and other necessary core functionality for each component of the ALG. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors.

The primary function of an ALG is to provide application-specific content filtering and/or proxy services. The ALG application suite may integrate related content filtering and analysis services and tools (e.g., IPS, proxy, malware inspection, black/white lists). Some gateways may also include email scanning, decryption, caching, and DLP services. However, services and capabilities which are unrelated to this primary functionality must not be installed (e.g., DNS, email client or server, FTP server, or web server).

Next Generation ALGs (NGFW) and Unified Threat Management (UTM) ALGs integrate functions which have been traditionally separated. These products integrate content filtering features to provide more granular policy filtering. There may be operational drawbacks to combining these services into one device. Another issue is that NGFW and UTM products vary greatly with no current definitive industry standard.

NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.

Solution

Configure Virtual Servers in the BIG-IP LTM module with only functions, ports, protocols, and/or services that are documented for the servers/applications for which the BIG-IP Core implementation is providing connectivity.

Supportive Information

The following resource is also helpful.

This security hardening control applies to the following category of controls within NIST 800-53: Configuration Management.This control applies to the following type of system F5.

References

Source

Updated on July 16, 2022
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