Complete Book of Remote Access: Connectivity and Security by Victor Kasacavage
By Victor Kasacavage
As know-how advances, the call for and necessity for seamless connectivity and good entry to servers and networks is expanding exponentially. regrettably the few books available in the market on distant entry specialize in Cisco certification coaching, one element of community connectivity or safeguard. this article covers both-the permitting know-how and the way to make distant entry safe. The definitive source for community directors and IT pros imposing and conserving distant entry structures, the whole ebook of distant entry: Connectivity and safety presents the technical heritage had to with a bit of luck decide on and enforce the easiest distant entry applied sciences to your company's community. It offers simple technical details on distant entry community applied sciences and the practical info at the function that distant entry networks play in relocating info. In-depth assurance indicates you ways to evaluate distant entry wishes and establish applicable suggestions for various systems. the writer contains discussions of distant entry configuration, protection concerns from robust authentication to VPN, troubleshooting, upkeep, and catastrophe restoration. With assurance at the allowing applied sciences and the way to make distant entry safe, the total booklet of distant entry is actually the definitive source for community directors and IT execs trying to in achieving seamless connectivity and strong distant entry to servers and networks.
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Additional info for Complete Book of Remote Access: Connectivity and Security
Remote user productivity does not depend on the connection to the corporate/branch office. Applications are resident on the remote system and can be run independently. Because user productivity is not totally dependent on the remote connection, usage-based line charges can be minimized. For example, when accessing e-mail remotely, the remote user is not required to maintain an open telephone line connection to the corporate/branch office while reviewing messages. The user can establish the connection to download messages, disconnect the line, then read messages offline at a more convenient time.
Although access is slower, a user can still access a file server directly instead of having to transfer the file to a local drive, which is required with the remote control method. To edit a document on a network drive, for example, a remote node user simply opens it instead of first transferring the document to a local drive. This makes remote node much easier to use than remote control. The remote system performs client functions while the home officebased servers perform true server functions.
Challenge Handshake Authentication Protocol (CHAP) — the server sends the client a random key (the challenge). The client uses the challenge to encrypt the password supplied by the user and returns the encrypted password to the server. The server looks up the user name in the database to extract the corresponding password, encrypts it using the same key, and compares the results to the user’s response. The password is stored in plain text on the database. To provide a comfortable level of security, traditional passwords should only be used to authenticate users when complemented with other security methods like callback or caller ID.