Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

redheadontherun's avatar
redheadontherun
Icon for Nimbostratus rankNimbostratus
Jul 27, 2016

Block Source IP using a blocklist hosted on a webserver

Currently we utilize a web server to host a blocklist that some of our other security devices use to block IP addresses. It allows us to maintain 1 list for all devices. Can the F5 ASM or LTM utilize...
ASM Advanced WAF
big-ip
ifiles
irules
LTM
security
Yann_Desmarest_'s avatar
Yann_Desmarest_
Icon for Nacreous rankNacreous
Jul 27, 2016

Hi,

 

this list can be uploaded as an ifile. You can also do a lookup using sideband connections in irules

 

Yann_Desmarest_'s avatar
Yann_Desmarest_
Icon for Nacreous rankNacreous
Jul 27, 2016

You can create an ifile using the following command : 

tmsh create sys file ifile blacklist source-path http://hostname.com/uri

and then update it using the following command : 

tmsh modify sys file ifile blacklist source-path http://hostname.com/uri

The filesize for a single iFile was raised to 32Mb in 12.1.0. Prior versions limited the size to 4Mb.