Meraki L2tp vpn setup on Fedora 41

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1

Hello everyone,
After many years away from Linux, I decided to test Fedora Workstation 41 as a development platform. Unfortunately, I’m having trouble setting up my work’s VPN (Meraki L2TP). I’ve tried several recommendations I found on the internet and honestly I have no idea what’s wrong or where to investigate. Has anyone experienced something like this and managed to solve it?

2

I do not know Meraki L2TP VPN.
who is the provider?
Does the provider have documentation?
What have you tried?

3

Hi Barry
Meraki is a Cisco brand.
Here are the steps to configure the VPN.

I have had no issues with MacOs or Windows…

I tested it by installing strongswan and removing libreswan and with the algorithms from phase 1 and 2
Phase1: 3des-sha1-modp1024
Phase2: aes128-sha1

regards

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4

Give Cisco documents how to do this it should be possible to get it working. But i do not have knowledge of enough of the pieces to help beyond asking a few basic questions.

They say to follow the redhat docs at Chapter 7. Setting up an IPsec VPN | Red Hat Product Documentation is that what you did?

6

Remove what you added in the phase 1 & 2 algorithm fields. If you don’t fill in the fields, it will use the same algorithms as macOS and Windows built-in L2TP/IPsec client (except when using libreswan which no longer offers the weak algorithms in the proposals).

If you do fill in the phase 1 & 2 algorithm fields when using strongswan, you need to put an exclamation mark (!) at the end of the proposals to override the defaults and not just appending to the existing proposals.

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Hi Douglas!

I was able to connect by removing the libreswan, keeping only strongswan, installing
NetworkManager-strongswan-gnome and, as you said, removing all information on phase 1 & 2 algorithm fields.

I don’t know if this is the best solution and if it would really be necessary to remove libreswan, but for now it met my needs.

Thanks to everyone

Greetings from Brazil
Toni