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Carlos_123412's avatar
Carlos_123412
Icon for Nimbostratus rankNimbostratus
Oct 23, 2015

Strange SNAT IP address behaviour

Hello everyone,   Recently we've discovered a weird behaviour on our BIG-IP system. We are currently running version 11.5.1 on an 8950 Active/Passive HA pair.   We have detected that a couple o...
application delivery
LTM
management
network
snat
snat pool
Carlos_123412's avatar
Carlos_123412
Icon for Nimbostratus rankNimbostratus
Oct 28, 2015

I've got TCP and UDP only on SNAT traffic forwarding. Yes, I'm receiving ICMP reply responses from any SNAT Pool IP configured, but when attempting to contact any TCP or UDP port on these addresses they are getting forwarded.

 ping XX.XX.42.86
PING XX.XX.42.86 (XX.XX.42.86) 56(84) bytes of data.
64 bytes from XX.XX.42.86: icmp_req=1 ttl=253 time=11.6 ms
64 bytes from XX.XX.42.86: icmp_req=2 ttl=253 time=2.13 ms
64 bytes from XX.XX.42.86: icmp_req=3 ttl=253 time=3.88 ms