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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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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0answers
57 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 ...
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1answer
249 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
98 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 ...
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1answer
220 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
9k 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 ~]# ...
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2answers
479 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 ...
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1answer
53 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 ...
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1answer
58 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 ...
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3answers
77 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
43 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 ...
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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
47 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 ...
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3answers
3k views

Openvpn client, force DNS server

Our Linux Ubuntu configuration does have a DNS server (Bind 9). And resolv.conf has its nameserver 127.0.0.1 When using openvpn client on that Linux, the nameserver is not changed (by the VPN ...
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1answer
167 views

OpenVPN tunnel one-way traffic failure between LAN and AWS VPC

We are trying to configure an OpenVPN tunnel that allows devices on our LAN to communicate with servers in an Amazon VPC. We are using the turnkey OpenVPN access server instance on Amazon and have ...
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1answer
105 views

OpenVPN with no internet access

I am using OpenVPN and am able to connect, but with no internet access anymore. Here is my ip table: sshadmin@mdpi1:/etc/openvpn/easy-rsa/keys$ netstat -nr Kernel IP routing table Destination ...
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1answer
2k views

iptables: access connected openvpn client from the LAN with the VPN server

I have what is essentially a routing problem, and I'm not familiar enough with routing and iptables to effectively troubleshoot and set up my network needs. What's working I have an openVPN network ...
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0answers
119 views

How to set up an OpenVPN server to accept server certificates as clients

I'm setting up a LAN to LAN VPN using openvpn. For reasons of easy certificate management I wish to re-use the server certificates which already exist on each host. I've set in the config file ...
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0answers
53 views

Routing traffic from LAN over VPN link out to 'net; works from router, not from LAN. What route is missing?

I have 3 machines. 2, routers, are connected over a VPN. The 3rd is a PC on the lan behind one of the routers. internet | | ROUTER S1 external: YYY.56.52.56 ...
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3answers
851 views

Poor Bonding performance over 2 bonded vpn channels

I have two Linux machines that I wish to connect via a bonded link. One machine has two UMTS modems (DN:5mbit UL:1.2mbit) as its gateways, and the other machine has optical fiber (DL:100Mbit UL: ...
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1answer
101 views

OpenVPN connection breaks after a few seconds

For the last hours I have been trying to connect to a VPN network through openVPN. My connection settings are: IPv4 tab: Method: Automatic VPN Routes: Use this connection only for resources on its ...
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1answer
545 views

Config OpenVPN on Window Server 2008 R2 for client can connect server's Lan network

I installed openvpn 2.1 on my Windows Server 2008 R2. My server has 2 network adapter. The first adapter connect to internet. (default gateway here) The second adapter connect to lan network. ip ...
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1answer
153 views

Is Dual Alternative authentication (User/Pass OR Client Certificate) possible with Open VPN?

I'm setting up a VPN network for multiple offices Using OpenVPN. This is dual purpose: LAN to LAN VPN allowing traffic to be seamlessly routed between offices. Allowing users to connect onto the ...
4
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1answer
702 views

OpenVPN web traffic routing not working

My first time trying to set up OpenVPN. I followed the HOWTO guide from OpenVPN's site and was successfully connected but when I tried to route my web traffic, it seems that nothing gets through to my ...
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1answer
85 views

Adapting the simple Open VPN example to get multiple client

The sample OpenVPN configuration in Debian documentation https://wiki.debian.org/OpenVPN gives the following code. Server /etc/openvpn/tun0.conf: dev tun0 ifconfig 10.9.8.1 10.9.8.2 secret ...
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1answer
439 views

openvpn tun forwarding with firewalld

I have an OpenVPN server on Fedora 19 with 2 clients - 1 client on the same LAN as the server, and the other on the internet. I want the 2 clients to be able to talk to each other thru the tunnel and, ...
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1answer
742 views

OpenVPN on ec2 bridged mode connects but no Ping, DNS or forwarding

I am trying to use OpenVPN to access the internet over a secure connection. I have openVPN configured and running on Amazon EC2 in bridge mode with client certs. I can successfully connect from the ...
2
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1answer
169 views

pfSense Cluster not working with Manual NAT

I have two pfSense clusters, one is 2.1.4 and one is 2.1.3. The directions suggest that Manual Outbound NAT is required, but the 2.1.3 cluster is working just fine using Automatic NAT, servers and ...
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32 views

Chef - handle resources changing the network interface

I'm using chef to deploy an openvpn application in bridging mode to an ubuntu node. In my recipe i'm using a bash resource to create the bridge necessary for the vpn to work. Unfortunately the bridge ...
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99 views

OpenWRT firewall redirect punch through

I am using an OpenWRT based firmware on a Netgear router as part of a research project that links the router to an existing broadband router to allow members of the public to access the internet via a ...
0
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1answer
158 views

OpenVPN not assigning fixed IP

I am configuring an OpenVPN server on my VPS and I'm trying to assign fixed IP to clients (to be able to apply firewall rules later on). Here is my /etc/openvpn/server.conf #Serveur UDP/443 mode ...
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0answers
46 views

Routing, OpenVPN and blocked Packets to Router

I have a running Zentyal Router. Now I have created a Softether-VPN (which wraps OpenVPN basically), to connect to this network per Network-Bridge/L2-Switch. So, when I connect per VPN I am in the ...
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6answers
2k views

OpenVPN and the iPad

So it seems that we have to connect iPhones and iPads on our network... Does an OpenVPN client for the iPad exist? If not, does a similar solution (where we control the VPN server) exist?
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2answers
529 views

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 ...
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1answer
196 views

OpenVPN, How to filtering client

I have a problem with limiting "client" with my VPN server. I was reading the FAQ about using iptables with disable option client-to-client, but i cannot run it. The question is how correctly allow ...
1
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1answer
535 views

pfSense failover and OpenVPN site-to-site

I have two pfSense Clusters, and am trying to connect them with an OpenVPN site-to-site VPN. Initially, the client was a single pfSense system, and all was well. Now that one system is a cluster, and ...
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1answer
484 views

My server goes offline when I start my OpenVPN service

I currently have a VPS with DigitalOcean and setup a OpenVPN following this tutorial: https://www.digitalocean.com/community/tutorials/how-to-setup-and-configure-an-openvpn-server-on-centos-6 and ...
8
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2answers
288 views

User's private key is used for auth only?

I have a simple question regarding OpenVPN protocol. Let's suppose we have two different users, with different keys for the same server, and both keys 1024bits. If this two users make the exactly same ...
0
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1answer
726 views

OpenVPN Site-to-Site Routing Woes

I'm fighting with an openVPN setup for connecting two sites. This is what the scenario looks like Office 1 (server): local network: 192.168.178.0/24 openvpn server public ip: 192.168.178.2 on br0 ...
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1answer
348 views

TLS Error on OpenVPN

Client: OpenVPN 2.3.4 64bit (Works fine connecting to my pfSense at home) Server: OpenVPN 2.2.2 installed via yum Followed this guide: ...
4
votes
3answers
919 views

connected to Centos openvpn but no outside internet access

I am using Windows 7 to connect to a VPS server running CentOS 6.4 First off, I have read every single post and just cant find the solution to my problem I configured my VPN server with openvpn, and ...
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3answers
2k views

How can an OpenVPN server be setup to use multiple certificates?

The OpenVPN documentation sets up a single certificate from a single CA to be used for all clients. Is there a way to set the server to enable multiple certificates from different CAs so long as the ...
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1answer
34 views

OpenVPN routing

My VPN network is 10.10.10.0 Apart from the server I have two special machines. I need all the clients to see 10.10.10.10 and I also need 10.10.10.30 to see all the clients. Enabling ...
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1answer
105 views

OpenVPN client breaks remote access to web server

I have an issue where whenever I use OpenVPN client to connect to the remote server to (obviously) set up a VPN tunnel, I can no longer see my nginx server. I can connect on the local network but it ...
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3answers
182 views

OpenVPN client connects but only loads SOME websites

I set up OpenVPN server on a Ubuntu 14.04 VPS using OpenVZ. I can establish a connection to the VPN with a client. I can access some pages like Google and twitter but a lot of sites fail to load. I ...
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0answers
133 views

openVPN on TCP 443 + sniproxy only for certain IPs - is it a way to do it?

I'm currently running sniproxy and https server. If user is known (IP is known) iptables just allows connection to sniproxy which redirects user to desired website or local https server (127.0.0.1 ...
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0answers
190 views

OpenVPN Linux Client does not bring up tap0 interface

I have an OpenVPN client on Linux connecting to an OpenVPN server. The server assigns IPs via DHCP, thus I connect using the tap interface rather than the tun interface. OpenVPN connects, ...
0
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1answer
439 views

Openswan and OpenVPN

I have installed Openswan and have configured IPSec tunnels and they work perfect until i install OpenVPN. Now i can't find out way the ping wont work. When i execute the "service ipsec status" it ...