VPN with IPSec and Manual Keys
IOS versions of the PIX prior to 5.0 used a connection method involving the Private Link Encryption Card to connect between two PIX Firewalls. This method is no longer supported; IPSec is used as the alternative. If your system is still using Version 4 or earlier of the Cisco PIX IOS, it is time to upgrade.
In this configuration, you will use IPSec to connect two networks over the Internet. You will also use manual keys for this example. In this example, your main corporate office uses an internal IP address of 10.1.1.0 with a 24-bit subnet mask, while your branch office uses10.1.2.0 with a 24-bit subnet mask. (As with any interface accessible from the Internet, the outside interface of the PIX must have a routable ...
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