Virtual private network impacts on the computer network performance with different traffic generators

Abstract

Virtual private network (VPN) is providing a solution of security to the network nodes. This can be performed by applying tunnels on the link connecting the hosts. However, VPN connection may impact the performance of network according to the traffic density. In this paper, three types of network seniors were tested in presence of VPN connection. A 200 Mbps VPN connection was made between a pair of nodes and performance of this connection is examined by monitoring the time delay and throughput. Network traffic seniors were changes between CRB, HTTP and FTP protocols. Results shown that throughput is not affected when using HTTP-UDP topology. While, throughput is increased when HTTP-TCP topology is used. The time delay is generally increasing in case of HTTP-UDP and HTTP-TCP as compared with other traffic generators.