International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
Many corporations are seriously concerned about security of networks and therefore, their network supervisors are still reluctant to install WLANs. In this regards, the IEEE 802.11i standard was developed to address the security problems, even though the mistrust of the wireless LAN technology still exists. The thought was that the best security solutions could be found in open standards based Technologies that can be delivered by Virtual Private Networking (VPN) being used for long time without addressing any security holes for the past few years. This paper analyzes impact of integrating Virtual Private Network technology and firewall to secure the flow of traffic between the client and the server using OPNET WLAN utility. Three scenarios without firewall, with firewall and Firewall-VPN have been introduced and simulated.