Some offices require multiple LAN to share information, such as between two office gateway devices routed through a secure VPN tunnel allows sites to share information through the LAN, via VPN site to site VPN tunnel between two networks endpoint to establish one to one association, in which a single VPN tunnel protection more than one host and the communication between the file server. In its simplest form is: two servers or the IP router to establish an encrypted channel, to ensure the safety of passing back and forth from the Internet Packet. VPN tunnel endpoint device on the Internet to create a logical point to point connection. You can configure the router on each gateway device, so that the packets can be routed in the VPN link selection.
5.3 The major carriers have an obligation to provide interconnection of non-binding, so that other operators do not have the network elements or facilities do not need to pay. 5.3.1 competing business operators, such as to enter the market, operators need to identify with the major network interconnection is technically feasible and economically reasonable interconnection points. 5.3.2 In order to enable operators to access the network elements of non-binding, regulatory authorities require major carriers to offer reasonable terms and conditions of the critical right of way use, including rod road, channel and pipe and so on. 5.4 The obligation to request the major carriers to the majority of other operators outside of the network termination point to provide connectivity of the points, fees should reflect the necessary facilities associated with the addition of a reasonable cost.