Questions tagged [openswan]
The openswan tag has no usage guidance.
130
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How to get 2 tunnels UP between OpenSwan and AWS?
I have a VPC and network in eu-central-1 and one in eu-west-1 in AWS.
The eu-central-1 fakes my on-prem environment. There I installed and configured OpenSwan on an EC2. In in eu-west-1 I configured a ...
- 343
2
votes
1
answer
162
views
what is the proposal string for aes-gem256 deffie helman group 20, esp
As a developer tasked with connecting to a vpn without preconfigured profile scripts, i'm fumbling through setting up a strongswan ipsec.conf file. My current hurdle is an "invalid proposal ...
- 121
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1
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146
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How to clear Openswan logs?
I am a Java developer.
I have been a Linux user for a few years, due to this fact, I was asked to clean up and analyze the disk space of one of our servers.
I came across an 81Gb file called Openswan....
0
votes
1
answer
2k
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UDP-Packets seem to get lost in IPsec tunnel from Strongswan to AWS cloud - connection works with Openswan
Use case: IOT-device connected through AWS cloud
The IOT-device is behind a router that sends all traffic through aws cloud.
The IOT-server can not be configured and thus is not part of the AWS cloud
...
- 41
0
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1
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793
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Connecting strongswan to badly configured openswan
I'm a bit stuck with configuring strongswan to connect to my office network as it refuses to verifiy the right side in any way, i was wondering if anyone knows of a way to just tell strongswan to ...
- 101
1
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0
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173
views
Trouble with routing on VPN with Openswan IPSec
Good morning, I'm having trouble configuring access to the servers through a VPN. The client can connect to the VPN perfectly, but access to the servers does not work.
The conf of my connection is ...
0
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0
answers
194
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Options for rebuilding OpenSwan box to LibreSwan without downtime?
This is all in an AWS VPC environment.
We have an old Ubuntu 12.04 machine running OpenSwan which is managing a pile of VPN connections. This has worked well for us thus far, but 12.04 is no longer ...
1
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0
answers
812
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Openswan l2tp vpn ppp wrong ip address
Using Openswan with xl2tp on archlinux (4.20) to connect to a vpn, I can create the tunnel and the ppp interface is created howerver it gets the wrong ip address:
enp4s0: <BROADCAST,MULTICAST,...
- 111
0
votes
1
answer
1k
views
NAT rules for VPN routing to public IP in local network
I'm trying configure a test VPN setup to route pings to an instances public IP. A corporate vendor we are connecting to has reserved all private space on their side. I'm not sure what NAT rules I need ...
- 101
0
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1
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439
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StrongSwan IPsec PING only working once after ipsec restart
Diagram VPN site to site:
And a GIF showing what is happening.
I create an IP route like this:
sudo ip route add 192.168.1.0/24 via 10.132.146.166 eth0 eth1
And I have this iptable rules
sudo ...
- 11
0
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0
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1k
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AWS Ubuntu Strongswan IPSec VPN and Iptables configuration tunnel routing
I've muddled up my configuration.
I've setup a site-to-site VPN between an AWS Ubuntu VM running strongswan, and another site.
The VPN tunnel is working, but anytime I try to route traffic through ...
- 257
1
vote
1
answer
2k
views
How to connect VPN Client Openswan
I have VPN server using Openswan with address 103.19.208.247
Then, i want connect my laptop (CENTOS) with IP 103.19.208.243 to VPN server. Here my configuration:
/etc/ipsec.conf
config setup
...
- 13
2
votes
1
answer
2k
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OpenSwan IPsec tunnel to Azure Gateway is established but unable to connect
I am currently trying to set up a IPsec tunnel between my on-premise center and to the VPN in Azure. I am setting up OpenSwan 2.6.23 on an Ubuntu Lucid box, and my box is behind a NAT.
ipsec.conf
...
- 43
0
votes
1
answer
1k
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Policy based routing in linux based on destination address.
I am struggling with a scenario. Suppose we have two systems in same subnet A:- 192.168.1.5 and B:-192.168.1.6 where B is further connected with C:-172.22.1.5 through Openswan. B can ping C but A cant ...
- 204
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1
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833
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Openswan server not routing traffic to LAN instances
I created an openswan instance which connected with AWS VPN and tunnel is up. I can ping from Openswan server to EC2 instance in VPC and EC2 instance can also ping Openswan private interface.
But ...
- 204
1
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1
answer
11k
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IPSec tunnel fails in phase 2
We are trying to establish a tunnel between our EC2 Instance and remote Cisco 3000 series device where it is failing for Phase2. Below is the scenario:
FTP Server(ec2-ubuntu) <---->VPN Server(ec2-...
- 1,587
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127
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Ubuntu site-to-site VPN with no LAN on one side
A customer requires us to connect to their system via a site-to-site VPN tunnel. ("Client-based VPN solutions are not accepted.") Once the tunnel is established we'll be consuming data over the ...
- 111
0
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1
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403
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Openswan/IPtables: Faking a unique IP address over VPN tunnel
Context:
I'm running a set of instances within the Google Compute environment. Each host has a single interface with single ip in the 10.0.0.0 private range.
I have external customers who ...
google-cloud-platform
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0
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1k
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IPsec VPN with subnet overlapping and NAT
I'm trying to configure, through OpenSwan on a Linux Ubuntu 14.04 the following scenario.
It's an interesting configuration and it would be great to understand why I'm failing configuring correctly, ...
- 173
3
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1
answer
8k
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Tunnel is up but I can't ping
I need to understand and resolve my issue. I know openswan works because when I connect from home network with an internal ip address of 10.0.0.97 to work's VPN, I'm able to ping but when I use the ...
- 313
0
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1
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2k
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ipsec verify indicates ERRORS "No tunnels up"
I just installed openswan on Ubuntu14. I'm trying to connect to my work's VPN (I have access to the Firewall/VPN btw). When I do a
/usr/sbin/ipsec verify
I get the following:
Checking your system ...
- 313
1
vote
1
answer
3k
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OpenSwan - IPSec VPN - tunnel established but can't see a specific server there
I have to connect my server to a VPN tunnel thought Internet to see a local server that is on IP 192.168.20.100
Here are IPSec AND IKE settings from server (not mine , I do not own the VPN server)
...
- 11
2
votes
1
answer
4k
views
Routing between OpenSWAN / IPSEC tunnels
I am trying to connect multiple Amazon VPCs (across regions) together using OpenSWAN and Amazon VGW's. The router instance can ping to hosts in both VPCs, and traffic is attempting to cross the router,...
- 5,113
1
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0
answers
189
views
OpenSwan and L2TPd traversing secondary gateway
I need some help with a networking project using Linux (RHEL based) and open swan with L2TPd (xl2tpd). While the initial setup works great, I want my VPN traffic to traverse over the secondary ...
1
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0
answers
356
views
Why would ping oscillate between receiving bytes and redirects over a VPN?
I have a VPN set up between an Ubuntu 14 VM under fusion on my side and a SonicWall on the other side. The Ubuntu VM is dedicated to the task.
When I ping a remote address, the results are very ...
- 141
5
votes
1
answer
3k
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Connecting to Meraki Client VPN from Ubuntu w strongswan and xl2tpd
I have a virtual appliance running Ubuntu 14 that I would like to connect to a remote network via Meraki Client VPN.
I have found instructions for installing and configuring strongswan and xl2tpd on ...
- 51
3
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0
answers
644
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OpenSwan IPSec log explanation
I am trying to understand the IPSec logs. Would be really great if someone can help me to understand the main things I look for and how to troubleshoot any ipsec issue. Would be really great of ...
- 131
1
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1
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3k
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Can't establish site to site vpn connection between Cisco 3900 and strongSwan client
I have website, which displays data, received from gsm modems. So i am trying to connect my website to GSM network provider using vpn.
Provider side there is a Cisco 3900, configured as site to site ...
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27
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1
answer
60k
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IPsec for Linux - strongSwan vs Openswan vs Libreswan vs other(?) [closed]
Searching for IPSec and Linux one inevitably will be confronted with different solutions (see below) which all seem quite similar. The question is: where is the difference?
I found these projects. All ...
- 433
5
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2
answers
8k
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Site to Site VPN error 'received hash payload does not match computed value'
We need to access a couple of Linux machines located at our client's end.
Our Linux machine, from which we need to access client's machine is located on cloud.
The connection to be established is ...
- 63
4
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3
answers
17k
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Connecting to a FortiGate VPN from a remote Linux machine via OpenSwan
Here's the setup:
I have a FortiGate unit on a business network, which has a FortiGate VPN set up. Machines on a remote network that can run FortiClient (Windows and Mac machines) have no problem ...
- 41
0
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1
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451
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IPSEC VPN site-to-"alias"
I am trying to connect my CentOS (CentOS release 6.7) server to a 3rd party VPN so traffic can be routed between my Apache instance listening on an aliased private IP (192.168.253.1), through the ...
6
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2
answers
37k
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How to enable debug logs in OpenSwan?
I use OpenSwan IPSec tunnel on CentOS 6.7.
I have added the following configuration in /etc/ipsec.secrets according to this link: http://linux.die.net/man/5/ipsec.conf
config setup
plutodebug=all
...
- 597
2
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3
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11k
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ipsec: Can't authenticate: no preshared key found for
I'm using Openswan with ipsec and ipsec keeps complaining about the shared-key not being present. I'm running Ubuntu 14.04 .
I'm just experimenting on a couple of internal systems since I'm new to ...
- 580
1
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0
answers
2k
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Docker + VPN LAN to LAN
We just migrated our applications to a Docker environment.
I have many containers running my Python Application in my VM. (4 containers per VM). This is a multi-tenant application.
This application ...
- 343
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0
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120
views
Can't connect Cisco 2621 to AWS EC2 Openswan site to site vpn
I am configuring Site-to-Site vpn between my home Cisco 2621 router and Amazon EC2 instance running openswan.
I keep on getting the following message on the openswan server: " NO_PROPOSAL_CHOSEN "
My ...
- 21
1
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0
answers
420
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Openswan to Cisco ASA IPSec tunnel - specific IP address range required. Netmap?
I'm attempting to set up a VPN tunnel between a Cisco ASA 5520 and an Openswan server running on Ubuntu 14.04 on a Amazon VPC instance. I do not have access to the ASA, and have been given the ...
- 11
1
vote
0
answers
121
views
IPsec and pinging rightsubnets
I have been racking my brain about this. I have openswan running and I have been able to get tunnels up. Unfortunately, when I try to ping computers on my right subnet, I am not able to get any ...
- 11
0
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0
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2k
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OpenSwan VPN IPSEC Tunnel Connection
I was hoping this website would be able to help with solving this issue since I've been running in circles on my end!
I am using OpenSwan to setup an IPSec tunnel between a VPN server on Rackspace ...
- 55
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1
answer
2k
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Malformed Payload recieved from juniper firewall to libreswan while setting up an IPSec Tunnel
I have a CentOS system with libreswan behind a router with static IP, and I have been trying to setup an IPSec tunnel with a server at remote location having juniper firewall. The IPSec VPN settings ...
- 3
0
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1
answer
1k
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openSwan VPN is up can't ping remote subnet
When I run the command ipsec auto status i get the following output:
......
172.16.255.1/32===104.131.13.155<104.131.13.155>:17/1701...41.203.65.124<41.203. 65.124>===10.100....
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1
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903
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IPSec Tunnel goes down during long periods of inactivity
I have 2 AWS regions I have connected using an OpenSWAN IPSec tunnel. This works great in our production environment but in our test environment where 1 of the regions has long periods of inactivity, ...
- 189
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1
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1k
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OpenSwan on Amazon EC2 - max number of retransmissions reached STATE_MAIN_I3. Possible authentication failure:
We are communicating with one of our clients over a VPN Tunnel.
Openswan tunnel was working perfectly fine before. Today we attached an Elastic IP to the server and rebooted. Since then the tunnel ...
1
vote
1
answer
6k
views
How to start and stop a libreswan connection
I have a connection configured on my libreswan instance on two machines.
The connection start automatically when I start the pluto daemon, I have try other settings, but the connection also starts if ...
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1
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715
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Can't ping public endpoints when IPSec tunnel is up
I'm using openswan to link two machines via IPSec. The tunnel comes online fine and I have connectivity to each endpoint via the VPN.
However, when the tunnel is up, I lose connectivity to the ...
- 95
2
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0
answers
1k
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Openswan IPSec VPN on AWS tunnel established but no traffic
I am setting up a tunnel with a telco using AWS/VPC/EC2/Centos7/Libreswan and have been stuck for weeks. Appreciate any help!
I have 192.168.16.73 (VPN GW, EIP 52.76.x.x) and 192.168.16.116 (...
2
votes
1
answer
5k
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Two tunnels with same rightsubnet for StrongSWAN/OpenSWAN
I'm trying to set up the "Option 3" configuration for Google Cloud VPN, with two Google Cloud VPN gateways on the left and StrongSWAN or OpenSWAN on the right:
If you have two Peer VPN gateways and ...
3
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0
answers
657
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Is there an extension of host to host ipsec to a many-many configuration?
Having a typical host to host transport mode ipsec configuration,
conn appserver01-to-swift01
[email protected]
left=10.133.176.246
leftrsasigkey=xxxxxxxxxxxxxxxxxxxxxxxx
...
- 151
0
votes
1
answer
208
views
Openswan L2TP setup to allow admin user access to AWS VPC
I've got an ssh bastion host, but managing the ssh whitelist is annoying, opening ssh to the world is suboptimal. I'd like to tuck a vpn server in front.
Can't get openvpn to stay connected for more ...
- 795
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votes
1
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1k
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IPsec VPN between Fortigate 60C and openswan up, but no traffic
I get visual confirmation that the tunnel is working from the fortigate GUI but, it also says i don't have 1 byte of traffic, the linux server also confirms the tunnel is open but i can't ping nowhere,...