Connecting to the Internet opens a whole world of possibilities for your Red Hat Linux computer. Using Red Hat Linux as a public Web server, mail server, or FTP server depends on Red Hat Linux's capability to connect to the Internet. Likewise, if your computers are already connected in a LAN, adding an Internet connection can provide Internet access to everyone on the LAN in one stroke.
Descriptions of how Internet domains are organized built on the coverage of IP addresses in the previous chapter. Creating dial-up connections to the Internet focused on descriptions of PPP. For connecting your LAN to the Internet, several different techniques were discussed. You can set up your Red Hat Linux computer as a router or as a Squid proxy server.
To use your Internet connection to transport sensitive data to another location in your company's private network, you can configure a VPN. This chapter described how to use CIPE in Red Hat Linux to create a VPN connection between two locations.