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

v11.1–Add Signatures or Checksums to iRules via an iApp

iApps, introduced in v11, have a primary function in controlling the object creation and management for an application delivered by BIG-IP. As discussed previously, however, anything that can be acco...
Published Dec 19, 2011
Version 1.0
application delivery
Automation
big-ip
dev
devops
iApps
irules
management
news
tech tip
JRahm's avatar
Icon for Admin rankAdmin
Christ Follower, Husband, Father, Technologist. I love community and I especially love THIS community. My background is networking, but I've dabbled in all the F5 iStuff, I'm a recovering Perl guy, and am very much a python enthusiast. Learning alongside all of you in this accelerating industry toward modern apps and architectures.
View Profile
John_Allen's avatar
John_Allen
Icon for Altostratus rankAltostratus
Mar 13, 2012
Important safety tip: You can't add a checksum to an iRule that you created in the same iApp -- it will give you an error. What you can do is create shell script, and call that from within your iApp. It would be a simple script that sleeps for 2 or 3 seconds, then runs the 'tmsh generate ...' command. Its not pretty, but it works for me.