ASA5510 Firewall Question

[jasoncaines]

Hello

I hope this in the correct forum. We have an Cisco ASA5510 Firewall. We are changing our ISP provider so we need to change the external Ip address of the cisco ASA5510 is that easy to do? In configuration  then interface we have ethernet 0/0 to the outside world of our old external IP do I edit that with the New external Ip address. Ethernet 0/1 inside will same the same 192.168.1.1. I noticed a  startup wizard is that easy to use instead? We also have VPN I can't seem to find where I change the IP address the user connect to, or when I do a global edit this change all the old external IP?

Regards

[Marvin Rhoads]

Sure it is very easy to change from command line. Something like:

asa>en

asa#config terminal

asa(config)# interface eth0/1 (or your interface currently asigned the address)

asa(config-if)# ip address

asa(config)# end

asa# write memory

This can also be done from the ASDM GUI. See "Configuration, Device Setup, Interfaces". Choose the outside interface and "Edit".

You need also check for things like static NAT addresses whihch may also use addresses from the public IP block. It is easiest from the command line, thus:

asa#show run | i

That will show you all the lines in the config that inlude addresses from your external network number.

Hope this helps.