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SilentKnight System IP traffic patterns and network integration highlights User Manual

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The VPN network edge (i.e. the subscriber’s gateway or ARC gateway) adapts the UDP traffic flow so it
can be transmitted through the tunnel. This adaptation may imply modifications on the UDP frame header
formats specified in the Figure Chart. Nevertheless, the VPN peer (the ARC gateway or subscriber’s
gateway, respectively) will to undo these modifications to convert the tunnelled IP traffic to LAN IP traffic
so it can be transmitted all the way to its destination.

In this case, the subscriber and ARC network firewalls should also include the security rules that allow the
traffic flows specified in Figure 2 Chart.