Chapter 4  Interconnection of the headquarters and branch offices

Table of Contents

4.1  Headquarters configuration
4.2  Configuration of a filial office
4.3  VPN test

This chapter provides information on interconnection of headquarters and branch office servers by an encrypted channel (VPN tunnel). The following example describes only the basic configuration of a VPN tunnel between two networks. No tips related to access restrictions or other specific settings are included here. For example of a more complex VPN configuration, refer to Kerio Control — Administrator's Guide.

The configuration consists of two parts: settings in the headquarters and settings of the filial. It is supposed that both networks have been already configured as described in chapter 2  Headquarters configuration and that connection to the Internet is available.

Example Notes

For better reference, review the figure providing a graphical description of interconnected networks, including their IP addresses.

Example of configuration of a network with assigned IP addresses

Figure 4.1. Example of configuration of a network with assigned IP addresses


The headquarters uses IP addresses 192.168.1.x with the network mask 255.255.255.0 and with DNS domain company.com. The branch office uses IP addresses 10.1.1.x with network mask 255.255.255.0 and with the subdomain filial.company.com.