NETGEAR ProSafe SSL VPN Concentrator 25 SSL312 Reference Manual
5.Enter the subnet mask. The subnet mask specifies the network number portion of an IP address. The factory default is 255.255.255.0.
6.Click Apply to save your settings.
From the Network screen, you can define the default network route. The default route is required for Internet access.
1.In the Default Gateway section, enter the IP address of the router or default gateway of the network in the Default Gateway Address field.
The default gateway address is the same gateway address used by local area network computers to connect to the Internet and it may be the address of a network firewall.
2.From the Interface
3.Click Apply to save your settings.
Note: The SSL VPN Concentrator does not perform Network Address Translation 
(NAT). And the SSL VPN Concentrator only enforces access policies on SSL
VPN traffic, not on other TCP/IP protocols. Therefore, the SSL VPN Concentrator should be used in conjunction with a network firewall.
If the interface is configured to terminate SSL VPN connections, then restart the SSL VPN Concentrator software for the change to take effect.
Note: The SSL VPN Concentrator administrative session will end when the software 
is restarted. To log in to the SSL VPN Concentrator management interface,
enter the new IP address of the SSL VPN Concentrator device in the Address or Location field of your web browser. Be sure that the management station is in the same subnet as the new SSL VPN Concentrator IP address.
To complete the IP settings configuration, also configure SSL VPN Concentrator DNS settings and network routes.
Static Route Configuration
If your corporate network contains other subnets whose resources will be made available through remote SSL connections, you must configure static routes to those subnets.
Additional System Configuration |