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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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What is difference between L2TP and PPTP?

I need a high performance VPN server, who can tell me the difference between L2TP and PPTP ?
larry
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Configuring OS X L2TP VPN to use Certificate for IPSEC layer instead of Pre Shared Key

I'm trying to setup a L2TP VPN on an OS X Snow Leopard Server setup, and have had success using a pre-shared key, however I would rather not rely on a simple string, and use a certificate instead. Setting this up on the server side is seemingly…
Matthew Savage
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Using Ubuntu Karmic as an L2TP Client for VPN

I'm trying to connect to a VPN service over L2TP using Karmic as a client and it's not working. The only details I have are the remote IP address, username & password, and a shared secret string; this is enough for Windows but doesn't appear to be…
James L
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No internet access through L2TP/Ipsec using Ubuntu 18.04 - Routing table

I have set up a VPN network using the package https://github.com/nm-l2tp/NetworkManager-l2tp. The VPN works well (on certain situations) but I think there's a problem with the routing. When I'm not connected to any VPN, the routing table looks like…
Jelther Gonçalves
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L2TP ipsec using network-manager-l2tp and strongswan ubuntu 18.04

The VPN works flawlessly on OSX and Windows 10 but no luck with ubuntu VPN gets connected on ubuntu using Phase1 Algorithms : 3des-sha1-modp1024 Phase2 Algorithms : 3des-sha1 And in 10 seconds gets disconnected with the below msgs …
f4r4
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How to stop Windows Filtering Platform blocking ICMP packets for legitimate RDP traffic over L2TP tunnel?

RDP via Windows 2008 L2TP to Windows 10 Pro did never work flawless. The first attempt in September 2018 needed the client Cord.app to be replaced with Royal TSX on OS X 10.9.5. The remote Win10 box crashed and was recently re-installed with all…
Pro Backup
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strongSwan 5.6.2 and xl2tp 1.3.12 on Ubuntu 18.04 SA established but no traffic

Since updating strongSwan and xl2tpd to the latest versions available for Ubuntu I encounter a problem with ESP and AH in L2TP. Server config: Interface for generating traffic ens224: flags=4163 mtu 1500 inet…
Boris
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Windows RRAS VPN failing to set options on Mac L2TP clients due to DHCP relay discarding packets

When setting up an L2TP VPN service for remote access on Windows Routing and Remote Access, we ran into an odd problem with setting options on the connecting clients. The way to provide these settings to L2TP clients in RRAS in through DHCP (MS…
Shane Madden
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Connected to Windows Server 2016 VPN on AWS but could not ping resources in VPC

I followed this guide to setup a VPN on a Windows Server 2016 instance in EC2 with only a single network interface and an assigned Elastic IP. I was able to connect my macOS to the VPN successfully using L2TP/IPSEC and get an IP address within th…
Carlo Miguel Cruz
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Can't access remote shares on L2TP VPN

I've set up a L2TP VPN for my (Microsoft Surface Pro 4) tablet when I am at work so I can still access my files on my local server. However when I'm connected to the VPN I can't seem to access my shared files via \\server.domain.com\share nor…
Realmlist
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Cisco ASA 5505 - L2TP over IPsec

I have followed this document on cisco site to set up the L2TP over IPsec connection. When I try to establish a VPN to ASA 5505 from my Windows XP, after I click on "connect" button, the "Connecting ...." dialog box appears and after a while I get…
xraminx
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L2TP VPN Connection on Debian Squeeze

I need to make an L2TP VPN connection from a Debian Squeeze server. What I have is: The server IP address Shared Key My username and password Just using these 3 parameteres I can establish the VPN connection from my Mac OSX computer right from…
Lashae
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Linux L2TP Daemon Recommendation

I need to setup a tunnel between two points with no encryption. I know this is generally done using L2TP but what would be the recommended daemon to use. I know of rp-l2tp which I have used in the past successfully but was wondering if there was…
Sean Preston
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xl2tpd: Provide L2TP/IPsec VPN connectivity to an entire subnet without using a default route

I've set up an L2TP/IPsec VPN using OpenSwan and xl2tpd using the "nodefaultroute" ppp option. The server's virtual IP address is set to 10.10.31.1 and it allocates addresses in the range 10.10.31.2-254. This sets up PPP links between 10.10.31.1 <->…
Tom K
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Juniper SSG 5 VPN

I have a host who set up our Juniper SSG 5 VPN with Firmware version-6.2.0r5.0 I've been trying to set up VPN on it using this guide: http://kb.juniper.net/InfoCenter/index?page=content&id=KB4094 I've followed the steps and on my Mac, whenever I try…
Ethabelle
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