GFI Software

Welcome to the GFI Software community forum! For support please open a ticket from

Home » GFI User Forums » Kerio Control » L2TP VPN
L2TP VPN [message #123669] Fri, 21 August 2015 19:54 Go to next message
RMCholewa is currently offline  RMCholewa
Messages: 9
Registered: July 2014
Hi there,

I currently use multiple VPN service subscriptions with Kerio. Most VPN providers offer various VPN protocols, like PPTP, L2TP and OpenVPN.

Kerio is lacking regarding VPN config options. In fact, in Advanced, you may choose the auth method and, under security, Use MPPE, Require 128-bit encryption and allow stateful encryption.

I think that these Security options are only applicable when using PPTP. Funny is that even if you choose a L2TP tunnel, the security options are there too.

I want to use L2TP (more secure) but I can´t see anywhere any evidence that the tunnel is in fact encrypted and the parameters negotiated. The debug log says nothing about encryption, cypher etc.

How can I be sure that my l2tp traffic is encrypted? Are there any settings that I may use to force encryption options?

Thank you!
Re: L2TP VPN [message #123843 is a reply to message #123669] Tue, 01 September 2015 00:18 Go to previous message
RMCholewa is currently offline  RMCholewa
Messages: 9
Registered: July 2014
Hi again,

Sorry to bump it, but I find it rather amusing that l2tp is a potentially more secure form of VPN, but there is not a single way of verifying that my connection is encrypted.

I am hardly a security expert, but afaik, you might use l2tp without encryption and, in fact, l2tp does not "provide" encryption. That´s why you associate l2tp with ipsec.

So, basically, there is no way of verifying that those l2tp connections I set up are encrypted, not by looking at the config options or looking at the logs, at least.

Any ideas?? Using PPTP and forcing 128-bit encryption at least means I am sure traffic is encrypted...
Previous Topic: Kerio Control Slow with limit 100%
Next Topic: pFsense + Kerio
Goto Forum:

Current Time: Thu Jun 01 07:13:20 CEST 2023

Total time taken to generate the page: 0.07597 seconds