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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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Cisco IPSec Issue with Windows 10

How can I connect a Windows 10 laptop to a Cisco ASA via VPN using L2TP/IPSec rather than AnyConnect? Apparently, the Cisco client is no longer supported, and the Windows 10 built-in client gives me the following error: The L2TP connection attempt…
Dave
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Expose L2TP network inside OpenVPN

I have a L2TP permanent connection setup in RRAS within Windows Server 2012R2 and an OpenVPN service listening for inbound connections. I'd like that the OpenVPN clients to have access to the network exposed by the L2TP VPN. I've tried setting up a…
Paul
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How to change IP-address of the Synology NAS-station when using VPN-connection?

I have set up VPN-connection (L2TP/IPSec) at our office lately. The main thing is that our employees could access Synology NAS-station from their home. VPN-connection works great, but the problem is with the IP-address of the…
ineedsomehelp
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Hosts with identical local IP's in separate environments disconnecting each other on connection to L2TP VPN

Host A, located in Virginia, connecting to TZ-215 L2TP VPN (WAN GroupVPN) server. Local IP: 192.168.1.2. Connecting using a unique local account setup on TZ-215. Host B, located in Pennsylvania, connecting to same TZ-215 L2TP VPN (WAN GroupVPN)…
jcoughlin
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Connect a Zywall USG200 to Windows Server 2012R2 based IPSEC/l2tp VPN

I'm trying to build a network configuration where clients can connect to some servers in a VPN via a Zywall USG 200 router/firewall. the network schema The architecture is composed by a windows server 2013 that acts as VPN gateway and some other…
Riccardo Cagnasso
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How to configure Fortigate 60D as L2PT/IPSEC client

I have a firewall Fortigate 60D and I need to create a tunnel to a L2TP/IPSEC server, so the firewall has to act as a client. Is it possible? I configured the L2TP/IPSEC server on a Linux Debian machine using Libreswan and I can connect to it using…
user335672
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RSTP over tunnel?

tl;dr: Is it possible to run RSTP over l2tp or MPLS? We have leased one gig capacity from a service provider's network, over which we sent a udp multicast traffic. The provider gives us drop at our PoPs at different locations and we terminate the…
Raj
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How do I allow outgoing connections to port 80 on a Remote Access VPN?

I have setup a simple L2TP VPN by using the Remote Access role. This works fine, however outgoing connections to port 80 don't work. I can connect to the shares and RDP, however browsing the web is not possible. How do I control this?
William
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L2TP + IPSec pfSense: can ping, no access

I am in process of setting up a L2TP + IPSec VPN (site to client) server based on pfSense. While being connected to the VPN, I am able to ping any of the resources (e.g google.com, as well as anybody on the LAN). But when I try to open something in…
Richard Topchii
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Does VPN Service on a "Standard" OS X Server use L2TP or PP2P?

Does VPN Service on a "Standard" OS X Server use L2TP or PP2P?
username
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SonicWall - connecting to L2TP VPN from DMZ

I have a company network running behind a SonicWall NSA 220. We have a wired internal network with workstations and file servers, but have all WLAN on a DMZ to allow guests to use it without access to the good stuff. The WLAN zone is NOT the…
Allan Høiberg
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Mikrotik IPSec Tunnels not working after RouterOS upgrade

We upgraded our RB1100AH2x yesterday from 6.19 to 6.22 and lost our L2TP / IPSec tunnels in the process. The logs are now littered with IPSec errors stating failed to pre-process ph2 packet. In the change log for 6.21 I notice that you can no…
DKNUCKLES
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How to debug IPsec L2TP authentication failure (Ubuntu StrongSwan client to Windows Server 2012)

I'm trying to connect via IPsec L2TP to a Windows Server 2012 server. Both the clients and the host are behind a NAT. I can connect from a Windows 7 machine without any problems, but when trying to connect using the same password from an Ubuntu…
Ian Mackinnon
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FreeBSD L2TP VPN connection error

I have a L2TP/IPsec VPN server on FreeBSD 10 set as this article. Everything works fine except clients cannot receive packets from outside. Here is the tcpdump result when a connected client tries to ping 8.8.8.8: root@freebsd-7638:~ # tcpdump -i…
Sieg
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Can't connect VPN tunnel when other on same NAT-router is connected

We have recently changed our FW to a ZyWall 310 with drastically improved throughput over the old one. However there is a new problem that occurred, we have several L2TP/IPSec clients that connect to the FW from remote. But if two of these tries to…
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