The F5 BIG-IP appliance must be configured to prohibit the use of all unnecessary and/or nonsecure functions, ports, protocols, and/or services.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
high	V-266084	SRG-APP-000142-NDM-000245	F5BI-DM-300045	SV-266084r1024616_rule	2024-09-20	1

Description
To prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within data types), organizations must disable unused or unnecessary physical and logical ports/protocols on information systems. Network devices are capable of providing a wide variety of functions and services. Some of the functions and services provided by default may not be necessary to support essential organizational operations. Additionally, it is sometimes convenient to provide multiple services from a single component (e.g., email and web services); however, doing so increases risk over limiting the services provided by any one component. To support the requirements and principles of least functionality, the network device must support the organizational requirements providing only essential capabilities and limiting the use of ports, protocols, and/or services to only those required, authorized, and approved. Some network devices have capabilities enabled by default; if these capabilities are not necessary, they must be disabled. If a particular capability is used, then it must be documented and approved.

Description

To prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within data types), organizations must disable unused or unnecessary physical and logical ports/protocols on information systems. Network devices are capable of providing a wide variety of functions and services. Some of the functions and services provided by default may not be necessary to support essential organizational operations. Additionally, it is sometimes convenient to provide multiple services from a single component (e.g., email and web services); however, doing so increases risk over limiting the services provided by any one component. To support the requirements and principles of least functionality, the network device must support the organizational requirements providing only essential capabilities and limiting the use of ports, protocols, and/or services to only those required, authorized, and approved. Some network devices have capabilities enabled by default; if these capabilities are not necessary, they must be disabled. If a particular capability is used, then it must be documented and approved.

ℹ️ Check
From the BIG-IP GUI: 1. Local Traffic. 2. Virtual Servers. 3. Verify the list of virtual servers are not configured to listen on unnecessary and/or nonsecure functions, ports, protocols, and/or services. If the BIG-IP appliance is configured to listen or run unnecessary and/or nonsecure functions, ports, protocols, and/or services, this is a finding.

✔️ Fix
Check the PPSM CAL and the site's System Security Plan/documentation for a list of prohibited ports, protocols, and services. From the BIG-IP GUI: 1. Local Traffic. 2. Virtual Servers. 3. For any virtual server(s) listening on all unnecessary and/or nonsecure functions, ports, protocols, and/or services, check the box next to the virtual server and click "Delete". 4. Click "Delete" again.