I need to replace a GTA gnatbox with a cisco pix 501, which would usually be straight forward enough, but theres a small catch.
The gnatbox supports aliasing multiple IP addresses to the exterrnal interface, which we currently use to provide for fault tolerance for email etc. After the external interface there is 2 adsl routers from 2 different ISP's, so the external interface has (for example) 100.100.100.101/248 as its primary IP, and 126.96.36.199/248 as its alias. Both 100.100.100.101 & 188.8.131.52 are port forwarded through to a mail & web server on the Lan.
How do you do this with the pix? I can only seem to specify 1 outside IP address at a time?