by Dinesh Thakur Category: Security

Virtual Private Networks creates a tunnel for using a public network (such as Internet) to transfer information between client's PC and office's network. To initiate tunnel in client PC it must have VPN software to connect the ISP router (RAS). After verification of validity of user, software establishes the connection between ISP and use client machine. The data packets sent through tunnel are encapsulated by the tunneling protocol in an additional header. The additional header provides routing information so that the encapsulated payload can traverse the intermediate inter-network (Public network, i.e. Internet). When the packets arrive at destination, the VPN software strips the header off the packets (or unencapsulates the packets) and send it to its destination on the local network.

by Dinesh Thakur Category: Security

• Message authentication ensures that the message has been sent by a genuine identity and not by an imposter.

• The service used to provide message authentication is a Message Authentication Code (MAC).

by Dinesh Thakur Category: Security

A user remotely located must be first authenticated before accessing the network or Intranet of an organization. The authentication procedures must be built into the firewall applied to the network or Intranet for the security measures. The procedures to validate remote login or access have been described in the following lines along with their comparison and features:


Page 36 of 36

About Dinesh Thakur

Dinesh ThakurDinesh Thakur holds an B.SC (Computer Science), MCSE, MCDBA, CCNA, CCNP, A+, SCJP certifications. Dinesh authors the hugely popular blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps. For any type of query or something that you think is missing, please feel free to Contact us.