What is a firewall? A firewall is a network security system that establishes a barrier between an internal network and an outside network and monitors and controls network traffic based on some predetermined security rules. A firewall is designed to prevent...
Using a Virtual Private Network or VPN, a private network can extend across a public network, such as the Internet, in a secure way. We often use a VPN in an organization to access the remote network. Many of us might have heard the terms PPTP, L2TP, OpenVPN, SSTP,...
SSL VPN or Secure Sockets Layer Virtual Private Network is a form of VPN that can be used with a standard web browser. Unlike IPSec VPN, it does not require the installation of specialized client software on an end user's computer. SSL VPN consists of one or more VPN...
One of the weaknesses of the original Internet Protocol is that it cannot ensure the authenticity and privacy of the data passed over the Internet. Any IP datagram that travels between two devices over an unknown network can be intercepted and modified. So, security...
What is the Diffie-Hellman Key Exchange Protocol? The Diffie-Hellman Key Exchange Protocol is a key agreement protocol that allows authenticated parties to exchange keying material over an unsecured connection. This protocol is widely used in protocols like IPSec and...
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