Chapter 11 Firewall

In order to do this, you would configure the SECURITY > FIREWALL > Default Rule screen as follows.

Figure 127 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 2 Plus User’s Guide