From Vpn Packet Direction; Figure 135 Block Dmz To Vpn Traffic By Default Example - ZyXEL Communications ZYWALL 35 User Manual

Chapter 11 Firewall

Figure 135 Block DMZ to VPN Traffic by Default Example

11.3.2 From VPN Packet Direction

You can also apply firewall rules to traffic that comes in through the ZyWALL's VPN tunnels.
The ZyWALL decrypts the VPN traffic and then applies the firewall rules. From VPN means
traffic that came into the ZyWALL through a VPN tunnel and is going to the selected "to"
interface.
For example, by default the firewall allows traffic from any VPN tunnel to go to any of the
ZyWALL's interfaces, the ZyWALL itself and other VPN tunnels. You could edit the From
VPN To LAN default firewall rule to silently block traffic from the VPN tunnels from going
to the LAN computers.
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ZyWALL 5/35/70 Series User's Guide