Forum Discussion
Blue_whale
Cirrocumulus
Mar 24, 2026[ASM] : "Request length exceeds defined buffer size " - How to increase the limit ?
Hi Experts , WAF is rejecting the request because it exceeds the maximum allowed request size (10MB) Requested URL : [HTTPS] /stock.option Host : trade-it.ifund.com Detected Request ...
Daniel_Wolf
MVP
Mar 26, 2026Hi Blue_whale,
to my knowledge you cannot extend the limit per URL, but you can unblock a request which triggers this violation for a specific URL with an iRule:
when ASM_REQUEST_DONE {
if {[ASM::violation names] contains "VIOLATION_REQUEST_TOO_LONG" and [string tolower [HTTP::uri]] starts_with "/stock.option"} {
ASM::unblock
}
}
Cheers
Daniel
Recent Discussions
Related Content
DevCentral Quicklinks
* Getting Started on DevCentral
* Community Guidelines
* Community Terms of Use / EULA
* Community Ranking Explained
* Community Resources
* Contact the DevCentral Team
* Update MFA on account.f5.com
Discover DevCentral Connects