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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Printer on OS X not printing across VPN subnets

I have an interesting situation where I have a two servers that connect two subnets via a VPN. One side is 192.168.0.0/24 and the other is 192.168.1.0/24. Communications appear to be working okay. I ...
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1answer
4k views

Pfsense 2.1 OpenVPN can't reach servers on the LAN

I have a small network set up like this: I have a Pfsense for connecting my servers to the WAN, they are using NAT from the LAN -> WAN. I have an OpenVPN server using TAP to allow remote workers ...
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1answer
52 views

How to know which user is connected to the OpenVPN Server?

I'd like to learn which user is connected to the OpenVPN server and the user is authenticated through certification. How can I do that? Is that possible to match the users and their certifications ...
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42 views

OpenVPN Radiusplugin AD and the user restriction

Im using FreeRadius which is using Samba4 (AD DC) as the user/password provider. OpenVPN is using Radiusplugin, which use that FreeRadius Server for authentication. This solution work great, but I ...
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16 views

Encapsulating VPN tunnels on Linux

I'm playing with python and networking and I want to write a program that allows me to select one of several VPN connections and encaspulate them within each other. That is to say, if I have VPN-A, ...
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1answer
86 views

Forward traffic to VPN

I have several servers I want to put on a VPN. I've set the VPN up with OpenVPN and that's working fine, each machine can access the other servers on the VPN. My issue is I would like to somehow ...
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38 views

OpenVPN and adding .p12 cert

Is there a way to add the .p12 type of cert to the openvpn config file? I've read and learned how to add the other files like so: <ca> -----BEGIN CERTIFICATE----- # insert base64 blob from ...
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2answers
2k views

OpenVPN tun routing (can ping tun interfaces) with mikrotik and NAT on both ends

Problem The Mikrotik site is unable to ping anything on the server site. The Server site is less important right now. OpenVPN Server config is on LINUX port 1194 proto tcp dev tun ca ca.crt cert ...
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1answer
434 views

How to route traffic from private network to openvpn subnet (and back)

I have a couple servers at Linode. I'm trying to set them up so I have a VPN into one of the machines and can then access all the other machines using the private linode network. Public access to ...
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1answer
125 views

Route all traffic through VPN

So I have one VPS (based on openvz) with VPN (openvpn) up and running. I'm connecting to this setup with laptop (archlinux) and everything seems to be working. Let's say that vps's ip is 192.0.2.4. I ...
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2answers
2k views

OpenVPN with a Windows Certificate Services PKI

has anyone tried using OpenVPN with certificates generated by Windows Certificate Services? In theory this should work. The provided easy-rsa PKI is not very comfortable to manage for many users. I ...
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1answer
150 views

OpenVPN Access Server connects and can browse all other ports than port HTTP and HTTPS

Hello dear Serverfault experts, I have a very frustrating issue with my recently installed OpenVPN Access Server ...
2
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1answer
165 views

OpenVPN redirect-gateway breaks other tunnels

This is my ifconfig setup: eth1 Link encap:Ethernet HWaddr 54:04:a6:49:99:16 inet addr:192.168.0.12 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: ...
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1answer
122 views

OpenVPN cannot connect to local machine that has two NIC cards

This is my first time EVER posting to these forums. Most of the time when I have an issue I can usually solve them by searching forums/Google. But this one issue has me stumped! My company just ...
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0answers
149 views

Setting Up Policy Based Routing For Openvpn

I am trying to run a server that is connected to a vpn. I want to route some of the traffic through the vpn and some of the traffic outside of the vpn. More specifically, I want all traffic to go ...
1
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1answer
98 views

Openvpn authenticating to multiple AD domains

I've a site with openvpn server on linux authenticating users against Active Directory (domain A) everything working fine. Now company has a different AD domain (B) with "Trust" setuped to original ...
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2answers
1k views

Configure OpenVPN client to continue trying after authorization fails

I just managed to cut my OpenVPN connection to some 20 servers tonight. I was experimenting with the client-connect scripts, and at some point one of the scripts returned a non zero response. This ...
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0answers
34 views

Secondary floating IP on TUN/TAP interface

I'm currently working on a HA Cluster implemented using Corosync 2 and Pacemaker and I've run into a network limitation beyond my control that prevents me from implementing floating virtual IPs. Now ...
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1answer
40 views

Openvpn, two tap network adapters

I have installed openvpn client on my pc (windows 7) and I have two tap network adapters. In this way I can open two openvpn connections at the same time. What I would like to understand is how it's ...
0
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1answer
57 views

Is netbios required with samba -> win7 and what ports are needed for view/read/write functionality?

Basically I do an IT course at my college (United Kingdom) and obviously with it being a college, they have web filters and a restrictive firewall. To bypass the web blocks and to access my rented ...
0
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1answer
122 views

What is the meaning of “/usr/bin/ip route add 180.151.157.4/32 via 0.0.0.0”

In the process of setting up a VPN client side, openvpn tries to add a route but it fails: /usr/bin/ip route add 180.151.157.4/32 via 0.0.0.0 RTNETLINK answers: No such device The reason why we add ...
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372 views

site-to-site OpenVPN tunnel with PFSense + CARP enabled causes regular drops

I have two datacenters, and in each datacenter I have two pfSense 2.1.5 servers running in CARP failover mode. I've established a OpenVPN, shared-key tunnel between the two datacenters, pointing at ...
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46 views

openvpn peers can ping network but not reverse

In a nutshell, I have two libvirt/kvm hosts on which I have virtual machines running. The hosting company that these machines are with cannot provide any sort of virtual network between these ...
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0answers
38 views

openvpn bridge works, but I can't get any other server on the network

I was configuring openvpn server, and I got the keys and the connection to work pretty fast. However, I can't get the client to connect to other instances in the vpn network, which defeats the whole ...
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1answer
122 views

Understanding an OpenVPN bridge from iptable's point of view

In my scenario, there is a machine which acts as both an iptables-based firewall and an OpenVPN-server at the same time. It has two network interfaces - eth1 is connected to the internet whereas eth0 ...
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0answers
99 views

DD-WRT OpenVPN Client Router not routing

I have been trying all weekend to solve this and unfortunately no success. I have a DD-WRT installed router, which is intended to be a gateway or tunnel to an OpenVPN server via the internet with the ...
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0answers
100 views

OpenVPN + Scrambled patch on Amazon EC2

Yesterday I deployed a regular OpenVPN installation on Debian Squeeze / Amazon EC2. The VPN server is in Singapore and I connect to it from China Mainland. Later on, after some tests I had to start ...
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2answers
264 views

OpenVPN - can I use an existing SSL certificate?

I want to setup OpenVPN server for my personal usage. I own domain and I have valid SSL certificate for this domain (issued by StartSSL). At the beginning of the setup instructions for OpenVPN ...
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0answers
356 views

Client successfully connects to OpenVPN server but with no internet access over the VPN

I'm trying to setup OpenVPN with static key authentication(instead of TLS) on TCP port 443; but the client cannot access the internet over the VPN after connecting to the server. Here's my current ...
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1answer
3k views

How to add multiple tap/tun, as I want to install multiple OpenVPN instance on one machine?

I want to install multiple OpenVPN instance on one machine(Centos), and it seems that each instance needs a unique subnet, and how to do this? And how to install multiple tap/tun
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423 views

OpenVPN --route-up Missing environment variables when passing to script

I'm diving into the glory of OpenVPN and I'm having a bit of trouble manually configuring the routing tables. I'm on Arch Linux. I know OpenVPN automatically updates the routing tables when ...
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200 views

OpenVPN - Http proxy - connection reset

I am dealing with a problem in OpenVPN (I think so) and maybe someone can help to sort it out. I am connecting to the internet through a HTTP proxy server (10.0.0.1:8080). As I set manual ...
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1answer
225 views

iptables forward port range through OpenVPN

I have a VPN server (the "host" - 10.8.1.1) on a public VPS instance running OpenVPN. The second instance I am running (the "client" - 10.8.1.2) is a local ESXi instance connected to the host vpn ...
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1answer
70 views

VPN routed traffic, response goes outside of VPN?

Here's a weird one. Whenever I'm on a hotel network I tend to like to route all my traffic through my home network. Mainly since I'm not entirely sure all my passwords go through SSL all the time. ...
0
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1answer
168 views

How can I create routes between two separate LANs on the internet over an OpenVPN tunnel?

Diagram I have separate router/OpenVPN appliances at two different sites. The appliances are actually TP Link routers running OpenWRT 12.09, r36088. I would like clients behind these two routers to ...
0
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1answer
100 views

VPN with client-to-client direct connectivity?

When setting up a VPN, clients (say client1 and client2) usually authenticate to a server, and together the three constitute the VPN. When client1 wishes to send a packet to client2, this packet ...
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61 views

Policy routing local user's traffic down a tunnel

I've got a Linux based Firewall/Router running iptables and SNAT for traffic passing through it to the Internet via a single uplink - This is working fine. There is also a small number of applications ...
1
vote
1answer
328 views

How to use a Linux OpenVPN client host as gateyway for a Windows OpenVPN client host?

I have an environment where I have a OpenVPN server (Linux) and a few OpenVPN clients (both Windows and Linux). All those hosts (server & clients) are connected to the Internet, they are not ...
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0answers
109 views

How to setup multiple OpenVPN connections on a server for a single localhost app to use on CentOS 6.5?

I have a scenario where I need to run several OpenVPN connections at one time and to allow a singular application to access each of these connections. How wold I go about starting up several ...
0
votes
1answer
300 views

openvpn server for mobile access routing/bridging

I'm running a web server on an IPC and want to get access to the network with VPN, because the customer doesn't want to host his data directly on the internet. This web server runs a webapp, which ...
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3answers
10k views

OpenVPN and Routing and IPtables

GOAL: Access internal network devices and browse web via the tunnel. 192.168.2.x = internal network 192.168.3.x = openvpn server 192.168.2.111 = openvpn server on internal network [root@openvpn ~]# ...
2
votes
2answers
813 views

TCP under OpenVPN is very slow (tsg attached)

I have a very weird problem with OpenVPN. Most VPNs work fine, except this one. Here I get very low performance from TCP connections, but the CPU load is low (so, not a CPU issue). OpenVPN is ...
0
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1answer
60 views

Same routes under VPN - how to workaround?

I only have basic experience with VPNs (mostly OpenVPN) and mostly theoric, but now I want to set up something more complex and I am evaluating the possible issues that I may face. I will try to ...
1
vote
1answer
79 views

How to forward a port to multiple internal ips

I have a Centos 6 64 bit server with OpenVPN installed. I'm using this iptables rule to forward a port for an OpenVPN user: iptables -t nat -A PREROUTING -p tcp -m tcp --dport PORT -j DNAT ...
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1answer
2k views

Cannot open TUN/TAP dev /dev/as0t0: No such file or directory (errno=2)

I just attempted to install OpenVPN Access Server on my Debian VPS that uses OpenVZ. It installed fine, however when I try to start it from the administration panel, I get these errors: process ...
0
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3answers
82 views

is it possible in this case to get two IPv6 networks to communicate over the IPv4 Internet?

I have a setup of a laptop connected to a cellular IPv4 network (3G usb dongle) and PC connected to another IPv4/IPv6 network. Both have been configured to run as IPv6 routers and each has its IPv6 ...
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1answer
46 views

Allowing access to subnets openvpn access server

I have a centos server running a openvpn access server. On that server I am running a windows server in virtual box. On the centos server I am running the vpn with a network address 172.27.224.0 with ...
6
votes
1answer
3k views

How do I prevent TCP connection freezes over an OpenVPN network?

New details added at the end of this question; it's possible that I'm zeroing in on the cause. I have a UDP OpenVPN-based VPN set up in tap mode (I need tap because I need the VPN to pass multicast ...
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2answers
1k views

How to Access OpenVPN Client Subnet

I'm setting up a site-to-site OpenVPN, For now: Users on the client side can access the subnets on the server side. accessing the VPN client machine [Its IP on the client subnet] works fine. But ...
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0answers
51 views

OpenVPN TAP binding order issue

I am running a 64bit Windows 7/8 AD environment using OpenVPN on remote computers to access our network/servers in our main office. Typically, once we install OpenVPN on a new machine and configure ...