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

Forum Discussion

mhd90_359601's avatar
mhd90_359601
Icon for Nimbostratus rankNimbostratus
Dec 12, 2018

Values in X-Forwarded-For when SNAT is enable

Hi I have a case where user has pointed out that the X-Forwarded-For has F5 self ip. F5 has automap enabled. Is this expected behaviour? The VS has tcp profile, so nothing being done by F5 to the htt...
application delivery
big-ip
LTM
pushkar_misra_2's avatar
pushkar_misra_2
Icon for Altocumulus rankAltocumulus
Dec 15, 2018

Unless server is modifying the XFF header, F5 will always set it as client IP. If you do capture and examine the backend traffic from F5 you can see the XFF details.