OpenVPN is a free and open source software VPN solution. It allows secure point-to-point or site-to-site connections with routed or bridged configurations and remote access facilities.

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Connecting OpenVPN client over Peering Connection to different VPC AWS

I am trying to connect the VPN client to VPC different than VPN server belongs to. That's my setup: Network diagram However I can't manage the VPN client 10.8.0.6 to be able to reach the instance in ...
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1answer
11k views

Installing OpenVPN on Windows7

It seems I cannot install the current version of OpenVPN (2.1.2) because the TAP driver is not signed and therefore windows 7 x64 refuses to install it. It shows up in the device manager, but with a ...
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1k views

RTNETLINK answers: File exists — OpenVPN errors

I have a bunch of servers that connect to the world through a "gateway" server that uses a NAT to redirect to the internet. I am trying to connect the gateway server to a VPN client through an ...
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ICMP Redirect with OpenVPN

I am running an OpenVPN Server on an Azure linux machine. I would like to understand the cause of the following issue. In particular I'm wondering if there is anything wrong with my routing. 10.8.0....
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1answer
13 views

Fowarding IP Traffic without NAT (Ubuntu 14.04)

I've been setting up OpenVPN and all the standard guides I have been following suggest setting up iptables so that the VPN server performs NAT on the VPN clients: iptables -t nat -A POSTROUTING -s *...
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Gateway gets stripped from DHCP Reply through OpenVPN tunnel

I have a bridged OpenVPN setup. This is my server config: port 1194 proto udp dev tap0 ca /etc/openvpn/easy-rsa/keys/ca.crt cert /etc/openvpn/easy-rsa/keys/server.crt key /etc/openvpn/...
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1answer
2k views

No internet access when toggling `redirect-gateway` in OpenVPN client config

I have a router with IP 192.168.1.1 subnetting 192.168.1.0/24. On that subnet, a Synology NAS has an IP of 192.168.1.181 and is running a VPN server using subnet 192.168.2.0/24. When I connect a ...
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1answer
3k views

Zentyal Server : Setting up secure VPN Client

I have officially exhausted pretty much all my google-fu trying to set this up so I'm asking my question here. For the record, I am a mid level rookie who has played around with servers in his spare ...
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25 views

Openvpn tap interface configuration gets self assigned IP

I have a strange misconfiguration on my openvpn tap network. Clients can connect and get there IP address in 192.168.42.x as intended, but after few seconds another address gets assigned to it, self-...
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1answer
3k views

How to get OpenVPN Client (Mikrotik RouterOS) <-> OpenVPN server (Debian/Linux) setup to work

I have some issues with making MT to work with OpenVPN server (Debian). I can make successfull connection to OVPN server, but traffic is not routed through OVPN server. Here is my configuration. ...
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OpenVPN authentication using pam_winbind

I'm running an OpenVPN Server on a Debian machine joined to my Active Directory Domain. I'd like to use pam_winbind for VPN authentication. This is where the troubles arise. Authentication is working ...
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Port-forwarding with openVPN client-server (ubuntu 16.04)

Here is my situation : - I want to set my computer (Ubuntu 16.04) as a VPN server. It has a local IP address 192.168.43.190, and a public IP - I have one raspberry pi as a VPN client, on a DIFFERENT ...
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12 views

OpenVPN server to forward traffic to client

I've set up OpenVPN on my Debian server. I want all traffic that goes on the OpenVPN server on port 65535 to route to a client's port. The client is connected to the server using OpenVPN. But the ...
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1answer
32 views

Signing OpenVPN server and clients certificates by Samba4 DC auto-signed CA.pem

I installed Samba4 and configured it to be domain controller, and it auto generated ca.pem, cert.pem, key.pem. And now I want to use the same CA of samba to sign the new certificates (maybe generated ...
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1answer
23 views

Can only ping one direction across an Openvpn tunnel

Setup: Main office - Ubuntu openvpn server behind a sonicwall Remote Office - ASUS router connected to the openvpn via it's builtin VPN client. Main Office 10.0.5.0/24, Openvpn 10.8.0.1 Remote ...
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25 views

tunnelblick - Chrome doesn't open HTTPS sites in office network [on hold]

I use Tunnelblick VPN client to connect to Office network. When my mac connects to mobile 3G hotspot, VPN connection works just fine. I can access HTTPS & HTTP web sites in office network. When ...
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2answers
92 views

Why does OpenVPN give the error: “unsupported certificate purpose” for an intermediate certificate?

When trying to connect an OpenVPN client (Android or Windows 7/10) to my test server, I receive the following error: VERIFY ERROR: depth=1, error=unsupported certificate purpose: C=CA, ST=QC, L=...
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79 views

Connect to openvpn management interface on unix domain socket

This should be super easy, I think I'm missing something obvious. The OpenVPN docs state that you can run the management interface on a Unix domain socket. OK, no problem, I tried that. openvpn --...
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27 views

openvpn: How to not use VPN for domains with multiple IP addresses

I want to route around openvpn for a specific domain. I have tried: allow-pull-fqdn route specificdomain.com 255.255.255.255 net_gateway But this simply does a DNS lookup of the domain and adds ...
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1answer
1k views

Can I use the same client certificate in multiple OpenVPN tunnels to the same server?

I have a simple setup like this: SERVER ---- INTERNET ---- CLIENT On SERVER I already have OpenVPN set up with a sertificate for CLIENT. On CLIENT I already have OpenVPN set up to contact the server ...
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1answer
27 views

With OpenVPN how can I only let LAN go through the VPN?

So I have the following setup: Now from home I like to make a connection through OpenVPN to access my LAN from work. So I edit the config of the OpenVPN client on my home computer to: remote 180....
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1answer
2k views

OpenVPN connected but no Internet or LAN

Good evening, I'm facing an issue with my OpenVPN installation. Been at it for 3 days now but still cant figure out what is wrong for the life of me... Basically the issue is that i'm able to ...
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1answer
26 views

Routing between openvpn interfaces/instances

I have 2 openvpn instances on one server (TCP and udp). One has clients in subnet 10.8.0.0/24 and another 10.8.1.0/24. Server IPs are 10.8.0.1 and 10.8.1.1: Is it possible to ping 10.8.0.2 client ...
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1answer
25 views

How can I assign OpenVPN clients static IPs?

I am trying to work out how to assign my various OpenVPN clients static IPs every time they connect. I have found multiple posts explaining how to do it when OpenVPN is on a PC, but not when it is ...
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501 views

OpenVPN sndbuf and rcvbuf

I would like to know what is the difference between the sndbuf and rcvbuf buffer used by OpenVPN and net.core.w/rmem_default or net.ipv4.tcp_r/wmem. What does OpenVPN do when some value a provided ...
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4answers
4k views

Openvpn, forward packets very slowly

I rebooted my server, and an odd issue just came out. I am running on ArchLinux, the clients are Ubuntu, Android and Mac. The problem is that accessing the internet via the clients is slow, about 2ko/...
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23 views

VPN connection problems regarding plex media server and voice over IP [migrated]

I have a home server - running Debian Jessie and plex media server. My router (fritzbox) allows all smartphones in my LAN to receive incoming landline calls (due to a certain app). This part works ...
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1answer
3k views

Configuring Shorewall for routed OpenVPN

I have an Ubuntu server 14.04 machine that serves as a NAT router. The routing is achieved using Shorewall, mostly in line with this tutorial. The LAN has the subnet 10.0.0.0/24 On this machine I ...
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1answer
64 views

Is it possible to WOL via OpenVPN?

I am trying to find a way to turn on my work PCs remotely via OpenVPN. The PCs are connected to a router which is on the subnet of another router owned by the people who manage our building. When the ...
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0answers
22 views

How to forward port through VPN on Linux

I'm setting up a small CTF (hacker competition) and have a machine that hosts VMs. One of these VMs will be the target. The host machine cannot be reached through the internet, so I have set up a ...
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24 views

NO routing in VPN to client side

I try to configure the following network structure in one dev VMWare environment. W.XP------| |-----W10 192.168.5.100 | | 192.168.4.100 ...
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2answers
3k views

OpenVPN: Not all DNS entries get pushed to clients from server. (dnsmasq)

I have been trying to find a solution to this problem, but have found no answer so far, so I hope you guys can help me out. I have a server running Ubuntu 10.04, which has a static IP address and an ...
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2answers
6k views

Cisco AnyConnect VPN via OpenVPN tunnel [Unable to modify IP forwarding table]

Background: I'm working as a contractor for a small web design agency. We have a particular project / client requires that any updates / development that are performed are done via VPN. The client VPN ...
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2answers
24 views

forward eth0 traffic over tun0

I'm trying to setup a raspberry pi 3 as a vpn access point(?) So far I have wlan0 configured to connect to a mobile hotspot, when this is connected openvpn connects to the vpn server. This works fine,...
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2answers
62 views

How can I connect remotely to our network from behind a double NAT?

Having successfully set up my home office network for remote access via OpenVPN, I would now like to do the same thing at work, however I am double natted. There is a central router maintained by ...
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2answers
32 views

OpenVPN TAP network

I have a question about the OpenVPN in TAP configuration. I want to access local resources through VPN connection from outside network. I think I need TAP configuration, because I want to send ...
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1answer
2k views

NFS fails to mount through openvpn tunnel

I am trying to establish an nfs connection through an openvpn tunnel. It really anoying and i dont know what to try next. The connectein test has been made on several platforms now. used debian/centos/...
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10 views

Docker serveral ip in container and openvp

Run docker container with openvpn. How for each user i can assign external Ip address of the server where Docker. In the usual case, for openvpn I use "client-config-dir" where you assign each user an ...
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1answer
22 views

Client route for OpenVPN Access Server

I am running OpenVPN Access Server and I'd like to push a route to every client on connection that is the equivalent of: sudo ip route add 172.17.0.0/24 via 172.27.232.1 Where should I go to set ...
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0answers
29 views

Securepoint client will not launch in Windows 8.1

An OpenVPN hosted on a CentOS 7 server needs to have a Windows 8.1 client. But when I install the SecurePoint VPN client and try to launch it, nothing happens. Specifically, I right click on the ...
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1answer
2k views

Limit/Throttle per user OpenVPN bandwidth using TC

I have a group of users connecting to my server via OpenVPN TCP and UDP (2 services). The two services are operating on tun0 and tun1 I'd like to be able to limit each user's bandwidth to say 5mb/s ...
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0answers
59 views

Openvpn client frequently uses a different IPv6 address causes a unstable connection

I set up an OpenVPN server on IPV6 recently, it runs well, except for one thing: the client loses connection frequently for Inactivity timeout (--ping-restart). Here's the log infomation on the client....
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1answer
1k views

OpenVPN run script after tunnel is set up

I'm having a hard time figuring out exactly how can I update my A records on my cloudflare account. I have already set up a script that checks for IP changes, and pushes the changes through the ...
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1answer
16 views

User specific network IP/Port permissions for Open VPN

We are using Open VPN to give secure access to our remote team to access our EC2 instances hosted on AWS. Usually we create one open VPN account for each team and give that account to the team. By ...
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5answers
5k views

OpenVPN won't start on ubuntu - PID not found

I am running ubuntu version 12.04 LTS and I have installed OpenVPN on it. After a while of troubleshooting why my client won't connect (I have generated keys and confligured the client), I ran '...
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1answer
19 views

OpenVPN multiple IPv4

I have been trying to configure OpenVPN to listen on multiple IPv4 addresses. What I want to achieve is to have OpenVPN listen on all available IP address & it does it at the moment: # netstat -...
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1answer
74 views

OpenVPN | How to make the server communicate to another server in LAN via OpenVPN gateway?

I've been trying my EC2 instance (OMD) to communicate to my LAN server (Raspberry Pi) via another EC2 instance (OpenVPN) but I can't make it work. The OMD server can ping the RPi but it can't connect ...
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OpenVPN gateways configuration with non-routable addresses

I have to configure OpenVPN gateways with cryptographically protected tunnel connecting two non-routable subnet addresses. Mutual authentication gates on the basis of certificates. I used this ...
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1answer
2k views

OpenVPN and TomatoVPN

Wondering if someone can help me with the following. I have updated my Linksys router with TomatoVPN and used the following config: Interface Type:TAP Protocol:UDP Port:1195 Firewall Custom ...
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1answer
144 views

How to do traffic shaping (rate limiting) with TC per OpenVPN client

This question is related to another question with a great answer and script from @Oliver. The goal: I want to modify/extend the script provided in this answer to suit my requirements, which are as ...