After finding this funky little command the other day I thought the readers of Fir3net may find it useful. Its especially handy when your LTM/GTM is placed directly onto the public network i.e not behind a firewall.
Command
To restrict access to the Web UI the following command is used,
root@f5ltm1(Active)(tmos)# modify sys httpd allow replace-all-with { 10.0.0.0/12 1.1.1.1/23 }
Additional
Note : This command does not restrict traffic to the Virtual Servers, only to the web management interface.
Rick Donato is a Network Automation Architect/Evangelist and the founder of Packet Coders.
Latest posts by Rick Donato (see all)
- Fortinet– How to configure NTP on FortiGate - January 13, 2026
- How to Configure a BIND Server on Ubuntu - March 15, 2018
- What is a BGP Confederation? - March 6, 2018
Want to become an F5 Loadbalancers expert ?
Here is our hand-picked selection of the best courses you can find online:
F5 BIG-IP 101 Certification Exam – Complete Course
F5 BIG-IP 201 Certification Exam – Complete Course
and our recommended certification practice exams:
AlphaPrep Practice Tests - Free Trial