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Questions tagged [l2tp]

Layer 2 Tunnelling Protocol is a layer 7 networking protocol which provides an unsecure layer 2 tunnel. It runs on top of UDP, and is commonly used to carry PPP sessions. Security is usually provided with the addition of IPsec.

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TP-LINK TL-MR6400 IPSEC L2TP VPN tunnel with GCP server

I have a TP-LINK TL-MR6400 router, connected to internet by means of an LTE sim. This is a very rough network diagram of my current situation.1 My IoT services sit behind the TL-MR6400. Unfortunately my mobile provider is NATting my external dynamic…
Nicola Bertellini
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Setup l2tp using Strongswan

I setup ikev2 using Strongswan, Now I need to add l2tp support to that What is the best and easy method to add l2tp support to Strongswan? Appreciate for any help
Farhad Sakhaei
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L2TP over IPSEC strongswan/xl2tpd slow connection debian 9 and 10

I have tried almost anything - my internet connection 500 Mbit/s I connect from the same external IP subnet so my speed to the server is also 500 Mbit/s. When i use wget from my l2tp server i have 450 Mbit/s download. When i connect to this server…
Kriss
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Windows Server 2019 - L2TP VPN in RRAS only accessable from internal interface, not from external

I have a problem installing a L2TP VPN Connection with Windows Server 2019. There are two interfaces: "Intern" - 10.0.0.1 / Internal interface "Extern" - 192.168.2.3 / External interface, connected through router to the internet I can easily connect…
Marc M
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Trying to setup L2TP and IKEv2 on the same server with Strongswan

I'm attempting to setup both L2TP (for use on my Android phone) and IKEv2 (for use on my Mac) on the same server with Strongswan I'm getting the following error when connecting L2TP, but IKEv2 works fine Apr 4 06:41:41 server charon: 16[ENC]…
Keanu
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L2TP/IPSec: Linux can not connect to Cisco ASA (but Windows can)

Our partner provides a service that is available only through the L2TP/IPSec tunnel. We successfully connect to it from Windows, but the connection hangs dead a couple of times a week. Therefore, I decided to set up L2TP/IPSec connection from Linux.…
yurybx
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SoftEther VPN AD Authentication only works for wildcard user

I'm using SoftEther on SBS2011, with L2TP/IPSec protocol. My initial client is Windows 10 with built-in L2TP/IPSec protocol. In my SoftEther Users, if I add a wildcard (*) user, and select "NT Domain Authentication", my user is able to connect. Note…
Greg Woods
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Administration of multiple sites (tunneling) - MikroTik & NAT

I would like to ask you for your opinion. I need to find a secure way how to manage small remote sites where I have RBs. We have HQ, where is Kerio Control as a FW and a lot of small sites with various types of internet connectivity solutions.…
devlin
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Configure L2TPv3 on Ubuntu using hostnames for peers instead of IP

Is it possible to configure L2TPv3 using ip l2tp commands on Ubuntu 18.04 but using hostnames for peers instead of static IP addresses ? If so can someone give me a hint on how to do this ?
Boris
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Using a Windows Server 2016 AWS instance how can I allow the ESP protocol in the security group of the server?

Stack Overflow Link I am following. (last step of step 1 of the anwser I have attempted to change the inbound/outbound security groups for my server but ESP is not on the list of protocols. I tried to create a custom protocol but when I try and…
Jonathan Mongeau
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Routing to L2TP/IPSec VPN (strongswan, xl2tpd). Can ping server inside VPN, cannot ssh (SSH is not ESP payload)

I created a L2TP/IPSec tunnel and I am struggling with routing, I cannot SSH to a machine in the remote network. My local system is Debian buster (current testing). Here is my local networkg config; interface ppp0 is the tunnel interface. #ip a 2:…
kmwil
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Configuring L2TP/IPSec on Cisco Router 2911

Hi all, I have problem with L2TP/IPSec configuration in Cisco Router 2911 . I cannot connect via Windows 7,8.1,10 build in vpn client. Here is my config : aaa new-model aaa authentication ppp L2TP-LOGIN local username l2tpuser password cisco …
Elnur M-i
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L2TP VPN http traffic blocked

I've got a VPN L2TP/IPsec server behind a NAT-T device. I had issues with connecting windows clients to the server but that was resolved via adding a registry entry "AssumeUDPEncapsulationContextOnSendRule". As per this link. The next issue is that…
Josh
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What secure encryption algorithm can I use with Windows L2TP client?

I successfully got a Mikrotik router to run as L2TP server, but it looks like Windows clients would fail to connect if I remove 3DES, which is not exactly secure, from the list of encryption algorithm. I have the choices of: 3DES, AES-256, AES-192,…
Manuth Chek
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Cisco ISR with Windows L2TP VPN

I have a Server 2012 box running PPTP and L2TP VPN services behind a Cisco 1841 ISR. My NAT rules allow the PPTP traffic to connect, however I cannot complete a connection with L2TP. The relevant NAT rules are below: ip nat inside source static…
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