IT Certification and Training Blog

What are the differences between an IPSec VPN and a GRE tunnel?

Posted by Kelson Lawrence on Jun 5, 2013 8:53:00 AM

By Tim Charlton

IP Security (IPSec) Virtual Private Networks (VPNs) and Generic Routing Encapsulation (GRE) tunnels are both methods for transferring data across public, intermediary networks, such as the Internet. However, there are considerable differences between the two technologies. Let’s start with a brief overview.

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Tags: VPN vs GRE, differences between VPN and GRE, Tim Charlton