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.
Questions tagged [l2tp]
202 questions
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Setting-up Windows Server 2003 as an L2TP/IPSEC VPN server
I'm looking for a pointer to step-by-step instructions for setting-up a Win Server 2003 Std box as a L2TP/IPSEC VPN server. I don't need to use certificates - pre-shared key is sufficient - and the server isn't on a domain.
All the sources of…

andyjohnson
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Windows L2TP VPN client has no Internet
The L2TP/IPSec VPN server is a Mikrotik router, with these firewall configurations:
/ip firewall filter print
Flags: X - disabled, I - invalid, D - dynamic
0 D ;;; special dummy rule to show fasttrack counters
chain=forward…

Manuth Chek
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xl2tp + strongswan ipsec -- xl2tp timeout
I'm trying to connect to a ipsec/l2tp vpn from a private network behind a nat-router. It works from different windows clients, but from my linux machine (openSuSE 12.3, strongswan 5.1.3, xl2tp 1.3.0) I don't manage to connect. First problem was that…

thr
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command/syscall to find the peer IP used by a pointopoint interface (VPN)
What syscall or command could I use to find the remote peer IP of an active tunnel on a *nix system
When Connecting to a VPN either l2tp/openvpn ppp0 or tun/tap the user specify the remote IP or an app does this by default, doing ifconfig gives…

nbari
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Unable to connect to server through VPN L2TP
I have set my Server app (OSX) to use VPN feature, with L2TP, using a VPN Host Name who is a FQDN pointed to my public static IP. By default it came with a shared secret, and a small range of IP's. In the DNS settings i have this server and the…

marafado88
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What configuration issue is preventing Samba Network Shares from being visible over VPN?
I set up a VPN using L2TP and IPSEC (with LibreSwan) using this script: https://github.com/hwdsl2/setup-ipsec-vpn
The only change I had to make was to change the instances of 'eth0' to the new format of Ubuntu device naming. My devices are enp0s31f6…

user2596313
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What are the ports needed for L2TP VPN on Mac OS X Server 5.0.15?
I'm configuring a Mac as a server with a VPN service.
So, I opened the ports listed as used by VPN in Apple documentation:
UDP 500 -> 500 (+ESP and AH)
UDP 4500 -> 4500
Any UDP -> 1701
(I got to these configs setup by the router wizard to setup…

Miguel Ribeiro
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L2TP VPN without certificates between Windows XP and ZyWALL USG 200
I'm trying to configure a ZyWALL USG 200 firewall to let Windows XP remote clients (dynamic IP address) to connect to the workplace network with a L2TP VPN.
I don't want to use certificates, a common username and password will be enough (and…

Lucio Crusca
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udp 300 - acl drop - flow is denied
I am facing below issue after connecting l2tp with Cisco asa.
Split tunnel is configured.
It drops dhcp packets. Here is capture and config.
29: 22:39:38.733909 192.168.255.1.68 > 255.255.255.255.67: udp 300 Drop-reason: (acl-drop) Flow is…

Raj
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Can't connect multiple user to L2TP VPN server (Error 720)
I have a VPS running windows server 2008 r2 standard.
I configured Routing And Remote Access and NAT , i created multiple users with "Network Access Permission: Allow Access" .
What i have done in routing and remote access:
i set up 21 static IP…

Behnam Maboudi
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Routing is disabled for LAN users while choosing all-net for IPSec tunnel
I have VPN with L2TP/IPSec server and tunnel configured. When I choose all-nets 0.0.0.0/0 to allow connection from any computer in the world, all LAN users with subnet 10.0.0.0/8 are disconnected from internet. How can I exclude local subnet from…

CODERx86
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Encrypted layer 2 tunnel over Internet for a contiguous subnet
I have two offices that are connected at layer 2 with fiber on a primary link with contiguous subnets on each end(it won't change anytime soon). It works just fine, I have full end-to-end layer 2 connectivity.
I want to setup a secondary link, over…

user2629636
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L2TP loadbalancing
Due to need to scale, I'm setting a new l2tp server using l2tpns and trying to balance the load between my two l2tp servers using LVS
LVS configuration
ipvsadm -A -u 192.168.10.10:1701 -s sh
ipvsadm -A -u 192.168.10.10:1701 -r 10.10.10.2 -m
ipvsadm…

Ammar Lakis
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cisco ASA 5505 l2tp vpn
I have a problem with cisco asa 5505 vpn configuration. I set l2tp for windows clients. I can connect to vpn but:
when i have "use default gateway on remote network" on NIC enabled i have access to all resources in network but i don't have internet…

begginer
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Clients cannot connect to L2TP server on Ubuntu 12.04 & 14.04 LTS
I am trying to set up a L2TP/IPSec server on AWS with instance running Ubuntu 14.04LTS. I followed the instructions that I found here : https://raymii.org/s/tags/vpn.html.
I tried to use 12.04LTS and 14.04LTS to install the VPN server but both gave…

CK Tan
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