Bug ID 606573: FTP traffic does not work through SNAT when configured without Virtual Server

Last Modified: Sep 13, 2023

Affected Product(s):
BIG-IP Install/Upgrade, LTM(all modules)

Known Affected Versions:
12.1.0, 12.1.1

Fixed In:
13.0.0, 12.1.2

Opened: Jul 22, 2016

Severity: 2-Critical

Related Article: K33645643

Symptoms

After upgrading to 12.1.0 or 12.1.1, FTP traffic no longer works correctly with SNAT, when SNAT is configured without a virtual server.

Impact

The BIG-IP system does not SNAT port 21 traffic. In rare circumstances this can cause tmm to restart.

Conditions

The BIG-IP system configured to allow FTP traffic through, and SNAT is configured without a virtual server.

Workaround

None.

Fix Information

FTP traffic now works through SNAT when SNAT is configured without a virtual server.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips