Routing - Cisco QuickVPN - PC Administration Manual

Networking

Routing

STEP 6
Routing
STEP 1
STEP 2
Cisco SA 500 Series Security Appliances Administration Guide
make requests to the router and the router, in turn, sends those requests to the
DNS servers of the active connection. You also can enable the IGMP proxy on the
respective LAN.
Click Apply to save your settings, or click Reset to revert to the saved settings.
If needed, you can change the routing mode, configure static routing, or configure
dynamic routing on your security appliance.
• Routing, page 83
• Static Routing, page 84
• Dynamic Routing, page 85
Routing
Depending on the requirements of your ISP, you can configure the security
appliance in NAT routing mode or Classic routing mode. By default, NAT is
enabled.
Network Address Transalation (NAT) is a technique that allows several computers
on a LAN to share an Internet connection. The computers on the LAN use a private
IP address range while the WAN port on the router is configured with a single
public IP address. Along with connection sharing, NAT also hides internal IP
addresses from the computers on the Internet.
Click Networking on the menu bar, and then click Routing > Routing in the
navigation tree.
The Routing Mode page appears.
Choose one of the following options:
• NAT: Choose this option if your ISP has assigned only one IP address to you
or if you are sharing IP addresses across several devices such as your LAN,
and using the other dedicated devices for DMZ. NAT is the default option.
• Classic Routing: Choose this option if your ISP has assigned an IP address
for each of the computers that you use.
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