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BackTrack 4: Assuring Security by Penetration Testing by Shakeel Ali, Tedi Heriyanto

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VPN enumeration

In this section, we will discuss discovering and testing Virtual Private Network (VPN) systems.

Several years ago, when a branch office wanted to connect to the head-office, it needed to set a dedicated network line between the branch and head office. The main disadvantage of this method was the cost; a dedicated network line was expensive.

Fortunately, there is a solution for this problem a VPN. A VPN allows a branch office to connect to the head office using the public network (Internet). The cost of using a public network is much cheaper than using a dedicated line. With the VPN, the branch office will be able to use the application in the headquarters as if the branch office is located in the Local Area Network (LAN). The connection ...

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