Date Added: Dec 2009
Network security is a very important issue in the IP world. There are different levels of security when it comes to securing information being sent over IP networks. The first level is authentication and authorization. The user or device identifies itself to the network and the remote end by a username and password, which are then verified before the device is allowed into the system. Added security can be achieved by encrypting the data to prevent others from using or reading the data. Common methods are HTTPS (also known as SSL/ TLS), VPN and WEP or WPA in wireless networks.