Internet Protocol Security (IPsec)

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1answer
6k views

Openswan's ipsec verify fails on “Two or more interfaces found, checking IP forwarding”

I'm trying to set an L2TP/IPsec VPN. I have installed openswan from the repository on Ubuntu 13.04 Section: universe/net Architecture: amd64 Version: 1:2.6.38-1 and configured it following the ...
3
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1answer
219 views

IPsec & cypharing algorithm Linux Ubuntu

What is the package that contain the implementation of IPsec and what is the package that contain the implementation of cypher algorithms that IPsec uses for enctiption?
2
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1answer
2k views

How do I connect to an L2TP IPSec VPN using a PSK on 15.04?

I've installed StrongSwan and the network manager helper and I have the options in the applet for VPN, but it only supports certificate configuration, not PSK entry. I've tried to add the PSK into ...
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1answer
303 views

can't ssh using l2tp-ipsec-vpn on 13.10

I am connecting to my office using l2tp-ipsec-vpn v 1.0.9 on Ubuntu 13.10. The connection succeeds, and i can ping to internal servers at the office, however when i attemp to ssh to these servers the ...
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1answer
4k views

Do I need to install a package (openSWAN or strongSWAN maybe) to use ipsec?

I want to connect to a windows share that only accepts ipsec transport mode. I have a list of security policies and a shared secret. I've skimmed through the man page on ipsec.conf on the web and it ...
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1answer
3k views

How to setup IPSec with Amazon EC2

How to setup an IPSec connection from my ubuntu laptop to Amazon EC2 instance? I tried setting it up using elastic IP and VPC with the following openswan configuration but it is not working. conn ...
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1answer
287 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
253 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
324 views

Starting service 'ipsec' tries to run uninstalled OpenSwan instead of StrongSwan

I installed OpenSwan to setup VPN server. It was not enough for my requirements so I had to uninstall it. Later, I installed StrongSwan to handle IPsec VPN. Now all my StrongSwan configuration is ...
0
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1answer
535 views

Aruba VPN configuration for Ubuntu Server 12.04

I need to configure VPN client for Aruba Intranet Access. Aruba provides VPN clients only for Windows, Mac and Android not for Linux. May be someone can help me to configure Linux server? Thank you ...
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0answers
670 views

L2TP/IPSec VPN configuration for Ubuntu 13.10 Desktop

My first question here, and I hope someone can help me out. I manage an Astaro/Sophos ASG220 UTM9 fw 9.106-17, and I have an L2TP\IPSec VPN object configured using a pre-shared key for ...
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47 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
39 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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0answers
982 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 ...
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0answers
293 views

how can create l2tp vpn conncection and disable IPSec in 15.04?

My company give me just username and pasword with the server address for L2TP vpn connection and say to disable IPSec for connecting, They are have Win and Mac Tutorial for using the VPN but don't ...
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0answers
315 views

IPSec site-to-site VPN - behind router

I want to setup site-to-site VPN between two routers. On one site is an Ubuntu router marked "A", on the other site is a Cisco small business router marked "C". Here you can see the draft: ...
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0answers
1k views

how to connect to ipsec VPN using Ubuntu 13.10

I used L2TP IPsec VPN Manager until upgrading to 13.10 It worked previously. But now it does not work. The ipsec server (Fortigate firewall, logs everything as just fine, then says the client ...
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37 views

How can I set up a VPN server using L2TP over IPsec with strongswan and ufw?

I'm having lots of trouble getting strongswan and L2TP to work. I'm also having lots of trouble finding a relevant and accurate guide for how to set it up. Would someone please provide a good ...
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0answers
42 views

VPN between Ubuntu server using OpenSwan AND Cisco ASA 5510

I have tried all manner of combinations and settings file and I have not been successful in getting my ipsec connection/tunnel up. My ipsec.conf is as follows conn myconnection authby=secret ...
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0answers
39 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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27 views

Configure access IPSec VPN

I followed this tutorial word for word: https://www.digitalocean.com/community/tutorials/how-to-set-up-an-openvpn-server-on-ubuntu-14-04 The server is running and I know its external IP. I'm faced ...
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21 views

Multiple problems with aead in ip-xfrm

According to my, possibly misinformed, understanding of IPsec ESP, aead, enc, and auth/auth-trunc perform non-overlapping functions: * aead: create ICV as checksum of encrypted payload * enc: encrypt ...
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42 views

xl2tpd LAC only works with 1st assigned IP in range

I have l2tp/ipsec vpn with a PSK serving ips out of a range to authenticated domain users. I am able to connect a remote user when assigned the first IP out of the range. I am unable to connect any ...
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60 views

How to create a VPN/IPSEC between two servers

I want to create a VPN/IPSEC between my two servers ubuntu 14.04. What tool should I use and how to configure it. thank you.
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58 views

Connecting to a IPSec/L2TP VPN with certificate, key and password

I'm having trouble connecting to a customer's network via IPSec/L2TP from Ubuntu. I successfully connected from a Windows machine, so I know that the VPN is working. I have been given two ...
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37 views

ip xfrm with encap espinudp

I am not able to configure ip xfrm with encap espinudp. ip xfrm state add src 10.60.60.31 dst 172.24.1.178 proto esp spi 0x5fca3acb reqid 212013014 mode tunnel replay-window 0 auth-trunc sha12 ...
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0answers
1k 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 ...
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0answers
151 views

Open Swan - L2TP/IPSEC connection drops Ubuntu Studio 14.04

Since I cannot get an ipsec connection using strongswan I rolled my machine back to openswan and am using the Werner Jaeger L2TP IPsec VPN Manager 1.0.9. Not too sure where to go from here - for the ...
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62 views

How to connect to a VPN using ubuntu 12.04?

One of my friends Shared his VPN credentials with me. Now I have VPN Address: vpn.example.com VPN User: user1 VPN Pass: 4321456fvg VPN Shared Key: ThisIsPassKey Server Name: Odoo-01 Server IP: ...
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3k views

IPSec L2TP VPN server on Ubuntu; IPsec SA established, but tunnel doesn't work

I want to setup a L2TP VPN on Ubuntu Raring (13.04) in order to connect to my home network. I was able to successfully establish IPSec SA but tunneling doesn't seem to be worked :( I have disabled ...