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

Forum Discussion

Raj_Barre's avatar
Raj_Barre
Icon for Altostratus rankAltostratus
Jun 13, 2018

Zip Files download taking time with Security Policy on virtual server

Our application team recently launched a download feature on one of the applications. This download consist of a zip file of size around 20 MB. This applications virtual server has transparent securi...
ASM Advanced WAF
security
samstep's avatar
samstep
Icon for Cirrocumulus rankCirrocumulus
Aug 10, 2018

You most probably have response signatures assigned to your policy. It will take some time to scan a 20Mb file against thousands of RegEx-es. 15 seconds seems a fair number. As ZIP on your website is a trusted file (I assume) response attack signatures should be disabled for .zip files in your policy.