Virtuální privátní síť

Abstract

This thesis is about secure access do the LAN, which is behind security gateway Zyxel Zywall USG 100. I use VPN for this access. Today, VPN is very used technology especially in companies with remote officess and travelling employees. In my thesis I configure access to the LAN behind Zywall throught SSL, L2TP and IPSec and I also concisely describe firewall. Then I compare these individual configurations in terms of administration, security, operating costs and the complexity of configuration for users.