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VPN Tunneled traffic is blocked - Address Spoofing

Question asked by Johannes Schoen on Feb 1, 2019
Latest reply on Feb 22, 2019 by Mark Mitchell

Hi Community,


I got a annoying strange behavior:


Perimeter Checkpoint, Transfernet to Core Firewall with topoloy RFC1918 networks.

New VPN tunnel with a /24 net from range.


Excluded tunneled network from address spoofing on external interface.

Created a Group RFC1918 networks with Exclusion of tunneld /24 network.

Set that group with exclusion to transfernet core-firewall interface


Traffic from VPN tunnel arrives, but dropped because of address spoofing.


What am I missing?


Help is much appreciated


Best Regards