Remote access is the ability to get access to a computer or a network from a remote distance. This is also possible with the help of a dedicated line between a computer or a remote local area network and the “central” or main corporate local area network. A dedicated line is more expensive and less flexible but offers faster data rates.Integratd Services Digital Network (ISDN) is a common method of remote access from branch offices since it combines dial-up with faster data rates. Wireless, cable modem and Digital Subscriber Line (DSL) technologies offer other possibilities for remote access. A remote access server may also be used as part of a virtual private network(VPN).