Chapter 7 Tutorials

4Enable the VPN connection and name it (“VPN_CONN_EXAMPLE”). Under VPN Gateway select Site-to-siteand the VPN gateway (VPN_GW_EXAMPLE). Under Policy, select LAN1_SUBNET for the local network and VPN_REMOTE_SUBNET for the remote. Click OK.

Figure 70 Configuration > VPN > IPSec VPN > VPN Connection > Add

5Now set up the VPN settings on the peer IPSec router and try to establish the VPN tunnel. To trigger the VPN, either try to connect to a device on the peer IPSec router’s LAN or click Configuration > VPN > IPSec VPN > VPN Connection and use the VPN connection screen’s Connect icon.

7.4.3Configure Security Policies for the VPN Tunnel

You configure security policies based on zones. The new VPN connection was assigned to the IPSec_VPN zone. By default, there are no security restrictions on the IPSec_VPN zone, so, next, you should set up security policies (firewall rules, IDP, and so on) that apply to the IPSec_VPN zone. Make sure all firewalls between the ZyWALL and remote IPSec router allow UDP port 500 (IKE) and IP protocol 50 (AH) or 51 (ESP). If you enable NAT traversal, all firewalls between the ZyWALL and remote IPSec router should also allow UDP port 4500.

 

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ZyWALL USG 50 User’s Guide