Implementing routing for branch offices and mobile workers

The following labs included the followings to practice all in one.

(1) Configure NAT
(2) Configure IP Sec VPN
(3) Configure GRE tunnel over IPSec
(4) Enabled dynamic routing over a GRE tunnel

Lab topology is as shown in below.

Your organization is expanding it's operation and wants to connect a branch site. To avoid expensive WAN costs, the decision make to use Internet as WAN link. So, you suggest to use IPSec VPN to support all traffic going between two sites. In addition, to have dynamic routing between two sites, implementing Generic Routing Encapsulation (GRE).

For branch office to connect to Internet, lab needs to use NAT from branch office.

If you are interested to practice, download the completed GNS3 lab files from here https://docs.google.com/leaf?id=0B889ogd4ltI2MzBjZmFiMGQtM2NhYi00NmI2LTk5YTktODM3MmNjMDQ5ZjBk&hl=en&authkey=CLH3uNoC