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Questions tagged [openvpn]

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.

OpenVPN is a free and open source software application that implements VPN techniques for creating secure point-to-point or site-to-site connections in routed or bridged configurations and remote access facilities. It uses SSL/TLS security for encryption and is capable of traversing network address translators and firewalls.

It's architecture is build upon 4 principles:

  • Encryption
  • Authentication
  • Networking
  • Security

More info is to be found on the Open-Source site of VPN.
A very thorough tutorial can be found on Shorewall.

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OpenVPN redirect-gateway does not work on Windows 7?

i have set up openvpn, and it works. pinging from client to server and backwards works just fine. but now i wanted to redirect all the clients traffic through the vpn. so i did the following steps as mentioned in the docs. on serverside: in…
JohnnyFromBF
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Is a PPTP VPN too insecure to consider using?

I need to set up a VPN for our small office. There will only be one person using it, and they will be transmitting private financial information in many cases. I know that PPTP has a number of security vulnerabilities, but are any of them critical…
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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 Authorization Mode:Static Key I have then inserted the…
Bill Johnson
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Poor OpenVPN NFS performance

I have EC2 application servers behind an elastic load balancer. All of the application servers have access to a shared storage server, notably for centralized cache files, logging, etc. The shared storage server implements NFS over OpenVPN to do its…
John
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OpenVPN Cannot allocate TUN/TAP dev dynamically

OpenVPN clients work fine when they're started by /etc/init.d/openvpn for the first time, but they can't reconnect if the master server is restarted. This is the error I get in syslog: ovpn-openvpn[8113]: Note: Cannot ioctl TUNSETIFF tun: Operation…
Akarot
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How do I block access to LAN through OpenVPN?

I seem to be having the opposite problem of most people who set up OpenVPN: I can't seem to limit VPN clients to just the VPN subnet. Instead, once a client establishes a connection, they're able to access any IP address on my OpenVPN server's LAN,…
Ben D.
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How do I configure multiple address pools for OpenVPN server?

I started an openvpn server about a year ago. As I didn't know what I was doing I left it as a /30 network. Now I have 40-50 (and growing) clients, each of which is using 4 addresses. How do I configure it so that it will move on to the next set of…
ethrbunny
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openvpn works if started from command line, not if started via init.d... why?

When I start openvpn on the server with: sudo openvpn /etc/openvpn/server.conf It works and I can connect my client to it. When I start it with: sudo /etc/init.d/openvpn start It appears to work as I see: * Starting virtual private network…
Lothar_Grimpsenbacher
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How do I make Windows 7 treat a VPN connection to a subnet look like a non-"public" network?

I'm torturing myself with the task of trying to get an OpenVPN connection to a work subnet working under Windows 7. After some travail I've gotten the OpenVPN client to work and properly connect. However, though the connection is apparently up,…
Pointy
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How much horsepower is needed to have 100Mbit/sec OpenVPN throughput?

My small ALIX machine is not coping with the new demand for OpenVPN throughput I have. So I'm looking to replace it. Problem is, I don't have any experience with hardware sizing for OpenVPN. I'm looking for something that satisfies this profile: =…
leto
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Sharing an IP pool for two openvpn instances (one TCP and one UDP)

I'm currently running OpenVPN on my VPS, listening on port 1194 via TCP. I need to use TCP since I sometimes need to tunnel traffic over an HTTP proxy. However, I'd also like to be able to use UDP, which should be faster. However, I don't want to…
Mikeage
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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 yellow exclamation mark. It's a fresh system, and…
Darcara
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Getting openvpn client to forward all traffic through server

I am trying to set up an openvpn server and client, with all client traffic being routed through the server. I am currently able to access the server through the client, but when I enable 'push "redirect-gateway def1"' on the server, the client…
correnos
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How to control multiple OpenVPN instances on the same server?

We have Centos servers running multiple daemons, up to 3 on each server. I have looked at the the rc.d init scripts and see no way to control the daemons independently. We would really like to be able to restart one tunnel without affecting the…
Michelle
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Free or very Cheap VPN server software with high concurrent users count

I'm hoping to implement a VPN whereby about 200 concurrent users can log in to briefly access my network. I had a look at OpenVPN and this seemed excellent, but was hoping that there would be a less costly option on a per-concurrent-user…
Martin KS
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