problem with VPN L2TP client-Server USG 100
Hi,
since a few weeks, i try to configure a VPN L2TP Client/Server. I followed the steps that were indicated in the documentation from Zyxell but when i want to connect to my VPN i have this message on windows :
"the L2TP connection attempt failed because the security layer encountered a processing error during initial negotiations with the computer."
I checked all the options but I can't find where the problem comes from.
I have 4 VPNs site to site and they work well.
Can you help me?
Thank you,
Dav975
PS: Sorry for my english, i speak french and start to talk in english.
since a few weeks, i try to configure a VPN L2TP Client/Server. I followed the steps that were indicated in the documentation from Zyxell but when i want to connect to my VPN i have this message on windows :
"the L2TP connection attempt failed because the security layer encountered a processing error during initial negotiations with the computer."
I checked all the options but I can't find where the problem comes from.
I have 4 VPNs site to site and they work well.
Can you help me?
Thank you,
Dav975
PS: Sorry for my english, i speak french and start to talk in english.
0
Comments
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Hello Dav975,
As your description,
does L2TP server behind NAT router? Also, please double confirm the pre-share key is match.
Moreover, here is the SOP of configuration of USG and PC side from FAQ.
PC:
https://businessforum.zyxel.com/discussion/456/how-do-you-configure-l2tp-vpn-between-zywall-and-a-windows-7-laptop#latest
USG: Just ignore step 7.
https://businessforum.zyxel.com/discussion/618/how-to-use-the-vpn-setup-wizard-to-create-a-l2tp-vpn-on-the-zywall-usg#latest
Charlie
1 -
Hello Charlie,
my VPN works. On the other hand, I have another problem.
I have two routers (which communicate with each other by another VPN) I have configured my outside VPN and my client on both (as you indicated above).
On one of them I always have internet, but on the other, I lose my connection. But my VPN works because I can join my servers.
Do you have an idea why i lose my internet connection?
Dav975
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Hello Dav975,
I want to confirm that do you mean if when "A" client access to internet via L2TP tunnel, another client"B" cannot, however, if when B client can access to internet, A client cannot?
Secondly, do both clients use the same account to login?
Thirdly, I want to check your configuration, please PM to me.
Charlie1 -
Hi Charlie,
I have a Client "A" and 2 USG 100 (USG "A" and USG "B") in 2 different building.
USG "A" has network address 192.168.1.0 and USG "B" has 192.168.2.0
Client "A" has network addres 192.168.1.0 at home.
When i connect Client "A" to USG "A" i have network and my VPN with USG "A". When i connect Client "A" to USG"B" i have my VPN with USG "B" but i don't have network.
0 -
ok for network it's working.
Thank you!
0
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