Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

Automatic Interface IP Address Change

A customer of mine uses an application called webposition that queries search engines and returns results such as ranking. Their question was that if they had a block of public IP addresses... could we have an a PIX/ASA or another cisco appliance set a schedule to where the untrusted (WAN) interface could change it's public IP address every "x" amount of intervals such as once per week/day/etc.

I have no clue if this would be possible with an PIX 501 or ASA 5505. Any guidance would be greatly appreciated.

I figured the worst case scenario we could put the boxes running that application outside the firewall or in a DMZ and use netsh combined with a batch script to change the IP addresses.


Re: Automatic Interface IP Address Change

No, you cannot automatically do it.

Your worse case scenario would have to work.


Re: Automatic Interface IP Address Change

what does changing the wan ip even accomplish in this scenario?