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.
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Getting "Cannot ioctl TUNSETIFF tun: Operation not permitted" when trying to connect to OpenVPN
I'm trying to setup an OpenVPN Access Server in AWS using the market place AMI, but I;m struggling to connect to it.
The access server is up and running. I've also added a user with Auto-Login and ...
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Should I use tap or tun for openvpn?
What are the differences between using dev tap and dev tun for openvpn? I know the different modes cannot inter-operate. What is the technical differences, other then just layer 2 vs 3 operation. ...
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How to view connected users to open vpn server?
I'm developing a website for managing OpenVPN users with Django framework. But I need to know is there any way to extract active users from OpenVPN? My server is running Ubuntu 12.04.
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OpenVPN vs. IPsec - Pros and cons, what to use?
Interestingly I have not found any good search results when searching for "OpenVPN vs IPsec". So here's my question:
I need to set up a private LAN over an untrusted network. And as far as I know, ...
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How to ensure OpenVPN connection uses specific DNS?
I'm using OpenVPN through Tunnelblick on MacOS X Lion.
I need to set specific DNS (with local IP, which works only when VPN is up) for the duration of this VPN session only.
I do not have access to ...
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How to check that an OpenVPN server is listening on a remote port without using OpenVPN client?
I need to check that an OpenVPN (UDP) server is up and accessible on a given host:port.
I only have a plain Windows XP computer with no OpenVPN client (and no chance to install it) and no keys needed ...
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telnet counterpart for UDP
Is there anything that enables a "telnet-like" functionality for UDP? I know the difference between TCP and UDP, and why telnet itself won't work - but I'm wondering if there is something similar to ...
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How do you avoid network conflict with VPN internal networks?
While there's a wide variety of private non-routable networks across 192.168/16 or even 10/8, sometimes in being thoughtful of potential conflict, it still occurs. For example, I set up an ...
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Generate an OpenVPN profile for client user to import
Is there any documentation or resource describing how to generate and host a profile for an OpenVPN client to import? Ideally would like my users to not have to separately fetch a .zip file of the ....
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OpenVPN performance: how many concurrent clients are possible?
I am evaluating a system for a client where many OpenVPN clients connect to a OpenVPN server. "Many" means 50000 - 1000000.
Why do I do that? The clients are distributed embedded systems, each ...
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Why is `--duplicate-cn` not recommended in OpenVPN?
Is this for security reason, or performance reason?
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Comments in OpenVPN client config files?
Is it possible to put comments in the client config files (those in the path specified by "client-config-dir") for OpenVPN, i.e. something beginning with "#" or "//" or the like? If so, what is the ...
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Can generated OpenVPN keys be used on multiple clients?
We are experimenting with running an OpenVPN server for our business. One question I can't seem to find the answer to is this:
When we generate keys for one of our users for them to use at home, can ...
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How to push my own DNS server to OpenVPN?
I have defined an unbound DNS server on my VPS and it appears to work. I need to use the DNS server instead of public DNS servers because some ISPs have blocked public DNS IPs. My openvpn.conf file is:...
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Allowing SSH on a server with an active OpenVPN client
I have a VPS running CentOS 7 that I connect to with SSH. I would like to run an OpenVPN client on the VPS so that internet traffic is routed through the VPN, but still allow me to connect to the ...
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