Casio ISA550WBUN3K9 manual Vpn

VPN	8
Configuring a Site-to-Site VPN

NOTE: The VPN firewall rules that are automatically generated by the zone access control settings will be added to the list of firewall rules with the priority higher than default firewall rules, but lower than custom firewall rules.

•Apply NAT Policies: Click On to apply the NAT settings for both the local network and the remote network communicating over the VPN tunnel. This option is particularly useful in cases where both sides of a tunnel use either the same or overlapping subnets.

-Translates Local Network: To translate the local network, select a translated address object for the local network.

-Translates Remote Network: To translate the remote network, select a translated address object for the remote network.

If the address object that you want is not in the list, choose Create a new address to add a new address object or choose Create a new address group to add a new address group object. To maintain the address or address group objects, go to the Networking > Address Management page. See Address Management, page175.

Figure 4 shows a networking example that simulates two merging companies with the same IP addressing scheme. Two routers are connected with a VPN tunnel, and the networks behind each router are the same. For one site to access the hosts at the other site, Network Address Translation (NAT) is used on the routers to change both the source and destination addresses to different subnets.

Cisco ISA500 Series Integrated Security Appliances Administration Guide 346