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

Forum Discussion

ADC18's avatar
ADC18
Icon for Nimbostratus rankNimbostratus
Aug 23, 2018

SNAT=None client source IP is self IP

I am trying to setup non-HTTP vServer. End server needs to see client source IP. After disabling SNAT ( SNAT=NONE), I am getting source IP as Self IP. End server GW is pointing to Self-IP. Why sour...
application delivery
big-ip
LTM
Martin_Šebek_58's avatar
Martin_Šebek_58
Icon for Nimbostratus rankNimbostratus
Aug 23, 2018

Where do you see a self ip as a source? If SNAT is not set the only traffic sourcing from self ip should be monitors testing availability of the nodes (backend servers).

 

ADC18's avatar
ADC18
Icon for Nimbostratus rankNimbostratus
Aug 23, 2018

This was my vserver config ( created http vserver to test) - (Active)(tmos) list ltm virtual mo_test_80-vs ltm virtual mo_test_80-vs { destination 10.4x.x.2:http ip-protocol tcp mask 255.255.255.255 persist { motTest { default yes } } pool mo_test-80 profiles { fasthttp { } } snatpool Default-SNAT }

 

Changed to ltm virtual mo_test_80-vs { destination 10.x.x2:http ip-protocol tcp mask 255.255.255.255 persist { motTest { default yes } } pool mo_test-80 profiles { fasthttp { } } }

 

I am getting source IP as per default-SNAT. I have changed monitor interval to 1000 second so it is not monitor traffic.