SoftEther VPN User Forum

Dear Community,

I'm trying to connect to an IPSEC VPN server embedded into a Stormshield firewall, from a Windows 11 machine. I've got the server certificate (-> Manage Trusted CA Certificate List), a username and a password (Auth type = Standard Password Authentication), created a VPN adapter and a VPN connection with information above.

However, the client fails to connect, returning Error 1 and I have no clue why...

Did anyone here ever try to connect to a firewall this way?

Thanks in advance for any help!

No, never. L2TP/IPsec connection is like this https://www.vpngate.net/en/howto_l2tp.aspx

Hi Solo, thanks for the answer!

However, I've already tried to configure Windows' embedded IPSEC client but Windows 11 does not provide that much settings and I just can't create the new connection properly. This is the reason why (as the article says 😉) I'd rather try SoftEther...

I have:
- The URL of the VPN server (my office firewall)
- The port (4500)
- The certificate of the server (.crt, for authentication)
- The user & password (for identification)

And yet always get this Error 1 message, while the client enters a dead loop...

SoftEther Server offers L2TP/IPsec among other VPN protocols but SoftEther Client has nothing to do with it.

https://www.softether.org/3-spec#VPN_Pr ... VPN_Server

Thanks Solo!

I was expecting the Client to provide support for connecting to a third-party VPn server, as in my firewall... Unfortunately, the firewall manufacturer doesn't provide any software client anymore and is advising installing TheGreenBow client, which doesn't install on my machine. 😞 I haven't any solution left now...

Thanks anyway for your time!