Questions tagged [ipsec]

Internet Protocol Security (IPsec)

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How to use ikev2 to connect university VPN in ubuntu?

How can I use IKEv2 to connect university VPN in Ubuntu?
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24 views

Set up VPN connection IPsec with AES and SHA authentication correctly to connect with router

I am trying to set up a vpn connection to access my router for my linux computer. On the server side everything should be set fine. Now I am trying to connect with my client but I can't really get it ...
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67 views

How to share IPSec VPN connection to eth1 or wlan0?

I have an Ubuntu pc with a working connection to my VPN server via Strongswan. The connection is IKEv2 with EAP MSCHAPv2 auth. On my Ubuntu pc I have second Ethernet port. I want to share my VPN ...
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1answer
64 views

Manage configured ipsec VPN with NetworkManager

I configured a strongswan VPN natively by editing /etc/ipsec.conf and /etc/secrets.conf under Ubuntu 18.04. I can now successfully establish the connections with: sudo ipsec up profile However, that ...
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1answer
179 views

How to set up L2TP client on Ubuntu 18.04?

I set up my system according to a tutorial I found on the Internet. I basically installed the necessary dependencies: sudo apt install network-manager sudo apt install network-manager-l2tp sudo apt ...
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1answer
454 views

18.04 L2TP VPN Config - what am I missing?

I've been trying to get an Ubuntu laptop to connect to our L2TP VPN server, I have tried using both 18.04 and 19.04, following a couple of tutorials which basically amounted to installing network-...
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61 views

L2TP/IPSec VPN without default route and DNS

I'm connecting to a VPN using network-manager's VPN plugin network-manager-l2tp-gnome. Connection is established, however the default route is set to the ppp interface and the DNS servers are changed ...
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0answers
91 views

How to use an IP address to connect multiple clients to the L2TP/IPSec Linux server?

At home, I use a modem to connect to the Internet. All mobile phones on the Internet are viewed with an ip address.(NAT) I have a VPS Server. I installed L2TP/IPsec service on it. It works well. But ...
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37 views

Wrong IP when Connecting to strongSwan Server

I set up a strongSwan server and I want to test connectivity. I added my username and password, the ca-cert.pem and re-started strongswan on the client. service strongswan status shows lots of ...
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2answers
117 views

IPSEC/L2TP VPN causes resolving name server problem with the latest systemd version on 18.04

After upgrading libnss-sysytemd library to the latest version 237-3ubuntu10.12, IPSEC/L2TP VPN connection is established but I cannot connect to outside of LAN. I found out the route table was not the ...
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110 views

Allowing VPN traffic trough Ubuntu firewall to connect on Sophos firewall

I need advice to achieve something and I can't find the answer anywhere. I'm setting up a network in a test lab. I have an Ubuntu machine that runs SNORT as an IDS and it's the only machine that as ...
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1answer
307 views

What Rules Need To Be Setup To Allow NAT on Softether VPN?

I would like some assistance setting up Softether on a locally bridged network with NAT, as well help getting the ip tables rules setup. I have 2 network interfaces with Ubuntu 18.04 LTS. I would like ...
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1answer
137 views

Latest strongswan update broken in 18.10 [closed]

A lot of strongswan files got updated this morning. It breaks strongswan because it can't find /etc/ipsec.conf. Sure enough, it's missing. The package file indicates that it's there, but it doesn't ...
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56 views

Routing local LAN through ipsec to remote LAN

I have a local LAN network 192.168.1.0/24 and on the remote side a LAN network of 172.30.0.0/16, with OpenSWAN on both sides that can ping each other's LAN address, and the local gateway machine can ...
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0answers
266 views

IPsec Uses OpenSwan instead of StrongSwan

Good morning guyz. I have been trying to establish a secure connection via IPsec(StrongSwan) between my PC and my server with help of this tutorial, i installed StrongSwan both on the server and the ...
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2answers
37 views

SSH'ing to server failes after setting ipv4 rules in sysctl.conf

Good morning guys, i have been trying to establish a secure connection through IPsec vpn between our server and my machine to test the VPN. i have been following this tutorial Site So Site Ipsec VPN ...
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109 views

L2TP/IPsec between server and client

I am trying since 10 days to establish a connection between the machine and the server i tried many ways. the company i work for want a secure connection between the server and the clients, so that ...
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0answers
341 views

I cannot get VPNC & NetworkManager running (IPSec Ubuntu 18.04 VPN to FritzBox) -

I cannot get VPNC working on Ubuntu 18.04 running on a Intel NUC. I installed network-manager-vpnc and network-manager-vpnc-gnome and I entered all the credentials as required. The connection starts ...
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1k views

Starting IPSec Command Hangs

I am attempting to establish a VPN connection between two regions in AWS EC2 (two virtual machines) using StrongSwan within Docker. However, I am getting a ton of errors when trying to start the ...
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1k views

Strange problem with l2tp / ipsec vpn

fresh install with ubuntu 18.04.1 here. I followed this link in order to setup a vpn connection at my workplace https://blog.bvzzdesign.com/2018/06/18/easily-connect-to-l2p-ipsec-vpn-in-ubunutu-18-04/...
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1answer
1k views

IPSec with strongswan doesn't connect

I'm trying to set up and IPSEC server with strong swan on 18.04 My ipsec.conf is: # ipsec.conf - strongSwan IPsec configuration file config setup charondebug="cfg 2" conn ikev2-vpn auto=add ...
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1answer
921 views

18.04 VPN l2tp issue - connects but no access to resources

My network setup is somewhat complex, so let's explain it. But first keep in mind that everything works perfectly with ubuntu 16.04, nixOs, several flavours of Arch based distribs, and windows 10. ...
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1k views

How do you connect to VPN with IKEV2 with EAP-TLS authentication on Ubuntu 16.0.4?

I've recently received three files called: vpn-host-certificate.cer company-ca-certificate.cer me.p12 My work environment is Ubuntu 16.0.4. It has been requested that I connect to a VPN that is ...
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1answer
1k views

IPSEC VPN client inside Docker container (Ubuntu)

I want to run IPSEC VPN client inside a Ubuntu docker container, I have install strongswan and all the neccessary packages required for an ipsec client, but the problem arises when i start the ...
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4answers
14k views

L2TP / IPSec failing to connect (Kubuntu 17.10)

I'm trying to connect to the corporate VPN from Kubuntu 17.10. I have network-manager-l2tp installed (version 1.2.8). The output I'm getting: Nov 28 17:20:48 T460 NetworkManager[667]: initiating Main ...
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1answer
496 views

Accidentally deleted the ipsec.conf file - what to do now?

While trying to setup my L2TP/IPSec VPN with strongswan and the network-manager-l2tp on Ubuntu 17.10 I accidentally deleted the ipsec.conf file from /etc. Reinstalling strongswan didn't help to ...
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1answer
283 views

Implementation of IPSec and IKEv3

I need help. I want to compare the Internet Key Exchange protocol performances version 2 with version 3 (IKEv2 vs IKEv3). I established a VPN connexion with IPSec and IKEv2, but i dont have any idea ...
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2answers
14k views

VPN L2TP/IPSec client on Ubuntu 16.04 VPN service failed to start

On Ubuntu 16.04, I've already followed a couple of tutorials to rebuild network-manager, also installed via apt-get install network-manager-l2tp network-manager-l2tp-gnome. It was working until ...
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0answers
639 views

strongSwan 5, IKEv2 and L2TP server over IPSEC

I have followed this tutorial and managed to configure IKEv2 with strongSwan on my Ubuntu server. However I am not able to configure L2TP and IKEv2 simultaneously on it. Previously, L2TP/IPSEC was ...
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1answer
277 views

ipsec security with esp and ah protocol

I have Ubuntu 14.04 LTS and I installed ipsec-tools. Can I add a rule in the configuration file ipsec-tools.conf to encrypt data with esp protocol then encrypt it (the encrypted data ) again with ah ...
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1answer
11k views

Unable to connect L2TP IPSec VPN from ubuntu 16.04 [duplicate]

I am trying to connect L2TP IPSec VPN connection from my Ubuntu 16.04 laptop. Every time I am facing same error since the same credentials working properly to connect VPNs server from any windows ...
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570 views

Module xfrm_user is in use

I've installed Openswan in ubuntu 14.04 using sudo apt-get install l2tp-ipsec-vpn Upon configuration for accessing my client vpn network(every time I had to change the password as it is dynamic) , I ...
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258 views

private/strongswanKey.pem: Permission denied

I am trying to create a certificate based tunnel but when I type this line: sudo ipsec pki --gen --type rsa --size 4096 --outform pem > private/strongswanKey.pem it returns me private/...
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1answer
1k views

UFW keep blocking IPsec

I'm trying to run ikev2 VPN server on Ubuntu 16. UFW list contains: To Action From -- ------ ---- Anywhere DENY 69....
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2answers
411 views

l2tp client yakkety (16.10)

Does anyone know if there is a l2tp-client for Yakkety? I've seen some post about installing on 16.04 and earlier but have not found something for 16.10. Preferably using network-manager but anything ...
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0answers
235 views

VPN over IPsec disconnects after 30 seconds

Im trying to connect to VPN over IPSec on Ubuntu 14.04. I'm setting it up via the applet: Everything works and I can connect to the VPN. However, after 30 seconds it always disconnects The log is: ...
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1answer
507 views

IPSec/L2TP Setup

I've successfully setup ipsec-tools/racoon/xl2tpd/pptpd/appropriate router port forwarding to operate a VPN for an Android phone. It works well from outside the network. I can seamlessly tunnel from ...
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0answers
78 views

Keep the same port number for forwarded packets

I have the following IPSEC setup: LEFT (IPsec) <===> MID (PPP) <=ppp=> RIGHT (IPsec+PPP) All running Ubuntu 14.04 LTS. MID communicates with RIGHT in PPPoE (marked ppp). Now... IPsec servers ...
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1answer
2k views

Is L2TP over IPsec possible in Ubuntu 16.04 LTS?

I am trying to connect to a VPN via L2TP over IPsec in Ubuntu 16.04. I know a small handful of posts here and bug reports have begun to document this issue, but I believe my experience, if somewhat ...
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1answer
2k views

VPNC Cisco Ipsec Auto Reconnect

I've had some issue finding a good starting point on building an auto re-connect script for a vpnc connection. I have a VPN configured for Cisco IPsec that drops fairly frequently and I need to have ...
6
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1answer
11k views

L2TP IPsec VPN client on Ubuntu Desktop 16.04 [closed]

I try to setup a vpn client on my ubuntu desktop. I know that some packet are now deprecated and not supported in 16.04. I've tried to run sudo apt-get install strongswan network-manager-strongswan ...
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1answer
404 views

What's a good ipsec client for ubuntu 15.10?

What's a good ipsec client for ubuntu 15.10? The vpn server is libreswan l2tp. The vpnc client for mac/windows connects on 'main' mode but vpnc is forcing 'aggressive' mode. Is it possible to turn ...
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0answers
227 views

Ubuntu 15.1 L2TP with MSCHAP

I have a client that wants to use their existing VPN that utilizes L2TP with MSCHAP.. I see that 15.1 does not use OPENSWAN but uses Secure SWAN. I installed that with apt-get install strongswan ...
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0answers
256 views

OpennSwan Ipsec Client with Cisco ASA/3000

I've tried a week without any success to setup IPsec ESP authentication via a CISO ASA. This is the topology I'm trying to achieve . I want to connect to the network which is on the back of CISCO ...
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1answer
3k views

L2TP Network Manager plugin cannot be installed

I'm using ubuntu 15.10 and a beginner of Linux/GNU system. I know almost next to nothing about VPN's detail too. So the terminology about VPN might be wrong. I and my colleagues use a server with ...
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1answer
245 views

Which VPN to choose?

I need to setup a VPN which is compatible with iOS devices (IPSec / L2TP / IKEv2, no PPTP please). My requirements are: Encrypted connection to a single server (with a critical application on it that ...
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0answers
8k views

L2TP/IPsec NetworkManager plugin using only username, password and PSK

I've Googled around and found three GUI methods to configure L2TP/IPsec VPN (the last of which is not a NM plugin, but a standalone program): network-manager-l2tp I'd have preferred to use this even ...
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2answers
938 views

L2TP/IPSec VPN Connection

On OS X, there's an option for L2TP/IPSec VPN in network connections where it lets you enter an IP Address, Username, Password, and Shared Secret. I downloaded Strongswan in Ubuntu, but do not see ...
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1answer
3k views

Setting up ipsec/l2tp/psk VPN

I am having a hard time getting a VPN setup - can someone point me in the right direction? I am connecting to a fortigate firewall and need l2tp/ipsec/psk support - im using ubuntu studio 14.04
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0answers
2k views

How to configure IPSec VPN on Ubuntu 15.04

In order to connect to the VPN I only need a few configuration options: server.domain.name PSK user pass What is the proper way to configure an IPSec VPN connection on my Ubuntu 15.04? I installed ...