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

ICAP 204 Response Frequently Asked Questions

The question keeps coming up: Why doesn’t BIG-IP support internet content adaptation protocol (ICAP) 204 response? (meaning beyond the preview, as would be indicated to the server by the optional "Al...
Published Mar 23, 2016
Version 1.0
application delivery
icap
LTM
JRahm's avatar
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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.
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Kimihito
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Jun 13, 2019

This article seems to be discussing ICAP in LTM, not ASM, as topic tag of this article is ltm. As far as I know, ICAP in ASM allows 204.