Vpn Tunnel Dynamic Ip

It could be anything as long as it is same on the other end.

Vpn tunnel dynamic ip. In order to achieve this we need to get dynamic dns ddns registered name for both sites from isp. This document describes how to build a lan to lan ipsec tunnel between cisco routers when both ends have dynamic ip addresses but the dynamic domain name system ddns is configured. This acl will be used in step 4 in crypto map.

1 configure isakmp isakmp phase 1 2 configure ipsec isakmp phase 2 acls crypto map. Creating a vpn tunnel with dynamic ip addresses using dyndns when creating a site to site vpn connection we would use public static ip addresses to connect to each end. If the remote asa s ip address is dynamic as well however has a fully qualified domain name assigned for its vpn interface then rather than define the ip address of the remote asa you now define the fqdn of the remote asa with this command on the router.

Site to site vpn with an ipsec tunnel and generic routing encapsulation gre. The interesting traffic must be initiated from pc2 for the vpn to come up. At one end we would tell our firewall to connect to the other firewall by specifying its static public ip address and then we would do the same at the other end.

This is an important configuration since it is the only way for the peer to identify the dynamic gateway. Cisco recommends that you have knowledge of these topics. Configure dynamic crypto map.

Here traffic originating from 192 168 1 0 network to 192 168 2 0 network will go via vpn tunnel. Ip route 192 168 2 0 255 255 255 0 10 254 220 9 192 168 2 0 is my remote router ip so what is 10 254 220 9. This acl defines the interesting traffic that needs to go through the vpn tunnel.

So once we have ddns configured for both sites then every minute it will change the tunnel destination to what ever ip address ddns name will be used for the remote site. Since firewall b has the dynamic ip address it needs to be the initiator for the vpn tunnel each time. Ddns registration for both sites.