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Tunnels
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assumes there is no outgoing 'firewall' rule on the NAT router that would prevent the wrapper packets from
being forwarded). The established session will mean that UDP packets that arrive from the WAN side will
be passed to the UDP port number that was the source port used in the outgoing wrapper packets.
• If it does not, then you will have to manually setup a port-forwarding rule, since there will have been no
outbound packets to initiate a session. The forwarding rule should specify the UDP port number that is being
used by the tunnel wrapper packets (the
port
attribute value in the tunnel definintion, or the default of 1
if the port is not specified)