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

Forum Discussion

INEVITABLE_89's avatar
INEVITABLE_89
Icon for Nimbostratus rankNimbostratus
Apr 26, 2012

Passive FTP

Hi,     I have two servers behind the F5 having ports 4021 and 4022 configured for FTP.   VIP is configured with port 21.     When i am trying to get on to the servers (port 4022) direc...
security
Christopher_Ach's avatar
Christopher_Ach
Icon for Nimbostratus rankNimbostratus
Jun 24, 2014

Sorry Nate, im not the one with the issue here im trying to help mroark and Rick also. I posted my prod config so they could see working config that works for Active and passive and with a "0" in the profile. And I have posted the bugs I have encountered with Passive FTP as I had issues myself which where resolved by eng hotfixes from F5 and now more newer versions.