Fig. 1: Formatting a packet for tunneling To illustrate how this works, consider the example of L2TP and IPSec. In Fig. 1, the original packet is shown in red as (A). Several headers are then appended ...

Or when your system is not configured to connect to the L2TP server correctly. Other possible causes for this are usually: L2TP based VPN client (or VPN server) is behind NAT.

Microsoft has officially deprecated the Point-to-Point Tunneling Protocol (PPTP) and Layer 2 Tunneling Protocol (L2TP) in future versions of Windows Server, recommending admins switch to different ...

Add L2TP and you've get an even bigger mistery when something doesn't work. In comparison, OpenVPN is easier to use and troubleshoot. The downside is, it's not as widespread as IPSec so there are ...

The Linux NetworkManager is sadly limited when it comes to VPN connections. Jack Wallen walks you through the process of adding an L2TP option, so you can connect to your company VPN.