ZyXEL Communications ZyWall USG 2000 User Manual page 433

15 Configure the following in the Filter Properties window's Protocol tab. Set the
protocol type to UDP from port 1701. Select To any port. Click Apply, OK, and
then Close.
Figure 308 Filter Properties: Protocol
16 Select ZyWALL WAN_IP and click Next.
Figure 309 IP Security Policy Properties: IP Filter List
ZyWALL USG 2000 User's Guide
Chapter 28 L2TP VPN Example
433