VPN (Virtual Private Network) is a technology that provides secure communication through an insecure and untrusted network (like the Internet). Usually, it achieves this by authentication, encryption, ...

In Part 1 of this article, we talked about security issues related to sending and receiving IP packets and the function of IP Security, or IPSec. We also discussed different levels of security and ...

IPsec is a suite of protocols that are used to secure internet communications—in fact, the name itself is an abbreviation for Internet Protocol Security. IPsec was first codified in the ’90s, spurred ...

With the explosive growth and popularity of the Internet, more and more enterprises are looking towards building their network infrastructure across the Internet without having to spend a lot on ...

Thought I'd start a new thread rather than hijack the other one. We're switching to a new MPLS VPN provider with 4 sites and a central colocation facility which tails into the internet. Each of the ...

IPv6 is starting to show up in around the Internet. Adoption is slow, but with the magic number of 4 billion- plus IPv4 addresses about to be reached, IPv6 will see a much faster pace of adoption as ...

Previous articles (Part one, Part two) in this series on implementing VPN gateways using Cisco routers discussed the IPsec protocol and basic IPsec VPN connection models. Now we'll learn how to ...