A Security Solution for Wireless Local Area Network (WLAN) Using Firewall and VPN

In the era of internet millions of users share resource for different purpose. The chances of security risks are more when a user connected with internet. Internet technology plays an important role in every aspect of human life. We can create virtual connectivity with-in seconds with anyone in the world and can exchange or share the information through internet. Sometimes these information is very useful for Defense, and personal use. Sometimes this information is stolen on the internet or we can say destroyed so that receiver cannot receive that information, so for successful communication on internet our connection should be protected. For this protection we can use Firewall protection, VPN Network. These Networks is much more protected than normal Network. Network with VPN and Firewall is faster and efficient rather than normal connection. In normal Network user may faces unexpected delay due to malware and virus. In this paper we have described and analyze impact of Virtual Private Network technology and firewall with normal network. We have simulated three scenarios without firewall, with firewall and Firewall_VPN. The simulation results of three scenarios are compared over WLAN and analyze the impact of Firewall and VPN on network performance. OPNET 14.5 is used for simulator work. Keywords: VPN, Firewall, Security, WLAN, OPNET 14.5