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

Forum Discussion

tacobell_14395's avatar
tacobell_14395
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Feb 15, 2012

Query Block??

Hello all- anyway to run a query on the f5 ASM to determine what ( if any) rule would be violated. My developers are asking me if the following would cause the f5 ASM to get blocked or get an error o...
app sec
BIG-IP Access Policy Manager (APM)
security
Mike_Maher's avatar
Mike_Maher
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Feb 15, 2012
So if all you are concerned about is the % I would suggest checking the Meta-Characters allowed in your URLs as if this character is not allowed it will be blocked. By default all Meta-Characters are blocked as a part of the URL, Parameter Names and Parameter Values so you would have to go into each area to allow the characters you want.

 

 

As far as running a query on the ASM itself I am not sure, but you could just send the requested through the ASM with a browser and see if you get a block page, if you get a response from the web server of any kind it made it through the ASM.

 

 

Mike