how to configure site to site vpn between two cisco 881 series and two offices have dynamic address behind adsl

[abdulkader.naji1]

Hi,

I hope I can find answer ,I have two office how to create site to site between them if both have adsl connection .

the Headqaurter has ddns on the adsl modem but the branch don't has.

is it possible how to do

[Brandon Buffin · Accepted solution]

See the following link for a configuration example:

http://www.cisco.com/c/en/us/support/docs/security-vpn/ipsec-architecture-implementation/118048-technote-ipsec-00.html

You will need DDNS on both sides. If the modem is not capable, you can setup the router to do DDNS. See this post:

https://supportforums.cisco.com/discussion/11586086/cisco-ios-router-837-configure-ddns-dynamic-dns

Brandon