Remote access • refers to the ability to access a computer, such as a home computer or an office network computer, from a remote location. • Remote access can be set up using a local area network (LAN), wide area network (WAN) or even a virtual private network (VPN) so that resources and systems can be accessed remotely. • To establish a remote connection, both the local machine and the remote computer/server must have remote-access software. Alternatively, there are service providers that offer remote access via the Internet.
• Another method for performing remote access is by establishing a VPN, a network that usually uses the Internet to connect remote sites and users together. • This type of network uses encryption and tunnelling to access a company’s network. This can be a great choice for a relatively small organization.
• This involve a computer, a modem, and some remote access software to connect to the network. Also include the use of an integrated services digital network (ISDN), wireless network, cable modem or digital subscriber line.
Virtual Private Networks (VPN) • is an encrypted connection that is carried across a shared public infrastructure in a manner that makes it appear to be a dedicated and secure link between two cooperating nodes.
• VPN allow organizations to use the public Internet for access to corporate data without the risk of authorized access to the information.
• Data is encrypted at both ends making it impossible for a third party to steal or damage secure information.
• VPN started in 1995 with the Automotive Industry Action Group (AIAG) and their creation of the Automotive Network Exchange project, which was developed to fulfil a need for efficient and secure communications between trading partners, certified service providers, and network exchange points. Two Key Technology used implementing VPN ( IPSec and PPTP) when
IPSec is a set of extensions to the IP protocol family. It works