How To Install OpenVPN Access Server on Ubuntu 12.04

Love it om nom nom - a snap to get this done!

To update OpenVPN to the latest version once it is already installed, you can perform the following steps. This will be different from what is posted in the directions above, as the OS build number and version number of OpenVPN will change from time to time. This works for when you only want to upgrade OpenVPN - not the whole system.

1. In a browser navigate to http://openvpn.net/index.php/access-server/download-openvpn-as-sw/113.html?osfamily=Ubuntu

2. Right click and copy the link to the current package appropriate to you.

3. In a shell (once you are connected to your VPN) type:

sudo wget

Then put a space and paste what you have copied from OpenVPN’s downloads page in step 2. In my case it was:

swupdate.openvpn.org/as/openvpn-as-1.8.5-Ubuntu12.amd_64.deb

The OpenVPN version number and server build number are the ones that will likely change based on your setup, which is why we need the current path.

The complete command you will enter will look something like:

sudo wget swupdate.openvpn.org/as/openvpn-as-1.8.5-Ubuntu12.amd_64.deb

4. After the updated package downloads, type:

sudo dpkg -i openvpn-as-1.8.5-Ubuntu12.amd_64.deb (same theory applies as noted in step 3)

5. You should see something like:

Preparing to replace openvpn-as 1.8.4-Ubuntu10 (using openvpn-as-1.8.5-Ubuntu12.amd_64.deb) … Upgrade detected (debian)… Unpacking replacement openvpn-as … Setting up openvpn-as (1.8.5-Ubuntu12) … Backing up configuration and DB files to /usr/local/openvpn_as/etc/backup prior to update.

• Restarting openvpnas openvpnas user@domain $

6. You’re upgraded and all set at this point.

Ok, I must be doing something wrong. I keep getting the “Problem loading page/Unable to connect” in Firefox (similar errors in other browsers) when I try to go to https://YourIpAddress:943 or https://YourIpAddress:943/admin. As best as I can tell, it installs correctly:

sudo dpkg -i openvpn-as-1.8.5-Ubuntu12.i386.deb Selecting previously unselected package openvpn-as. (Reading database … 23524 files and directories currently installed.) Unpacking openvpn-as (from openvpn-as-1.8.5-Ubuntu12.i386.deb) … Setting up openvpn-as (1.8.5-Ubuntu12) … The Access Server has been successfully installed in /usr/local/openvpn_as Configuration log file has been written to /usr/local/openvpn_as/init.log Please enter “passwd openvpn” to set the initial administrative password, then login as “openvpn” to continue configuration here: https://YourIpAddress/admin To reconfigure manually, use the /usr/local/openvpn_as/bin/ovpn-init tool.

Access Server web UIs are available here: Admin UI: https://YourIpAddress:943/admin Client UI: https://YourIpAddress:943/

I’ve tried both the 1.8.4 and 1.8.5 on the Ubuntu 12.04 x32 512MB server and I get the same result with both. I’ve install Apache and I can access that just fine, so it’s not like the thing is unreachable. I’ve also tried to configure it using the /usr/local/openvpn_as/bin/ovpn-init tool, but haven’t had any luck there either.

I’ve spent the last couple of days trying to get both OpenVPN and OpenVPN-AS, and have had no luck getting them running, so any help would be greatly appreciated.

What’s the output of the following command (as root)? <pre>netstat -plutn | grep 943</pre>

I think I’ve got the problem solved. It could have been one of several problems on my end. I might not have reverted back to a snapshot without any openvpn installed, so openvpn and openvpn-as might have been conflicting with each other, or some of the config files that I had edited may have still been on the system. Also, if you’re using a domain name, https://www.domain-name.com:943 doesn’t work, but https://domain-name:943 does work. I was also trying to set this up while at work during some down time, so the firewall there could have been blocking the necessary ports.

I just installed Open VPN as on my VPS I can not start the service this error comes out, i hope can get some help thanks in advance for your help

Error:

process started and then immediately exited: [‘Thu Aug 8 01:39:30 2013 Cannot open TUN/TAP dev /dev/as0t0: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:30 2013 Cannot open TUN/TAP dev /dev/as0t1: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:31 2013 Cannot open TUN/TAP dev /dev/as0t10: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:31 2013 Cannot open TUN/TAP dev /dev/as0t11: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:31 2013 Cannot open TUN/TAP dev /dev/as0t12: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:31 2013 Cannot open TUN/TAP dev /dev/as0t13: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:31 2013 Cannot open TUN/TAP dev /dev/as0t14: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:31 2013 Cannot open TUN/TAP dev /dev/as0t15: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:31 2013 Cannot open TUN/TAP dev /dev/as0t16: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:31 2013 Cannot open TUN/TAP dev /dev/as0t17: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:31 2013 Cannot open TUN/TAP dev /dev/as0t18: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:31 2013 Cannot open TUN/TAP dev /dev/as0t19: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:30 2013 Cannot open TUN/TAP dev /dev/as0t2: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:31 2013 Cannot open TUN/TAP dev /dev/as0t20: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:31 2013 Cannot open TUN/TAP dev /dev/as0t21: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:30 2013 Cannot open TUN/TAP dev /dev/as0t3: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:30 2013 Cannot open TUN/TAP dev /dev/as0t4: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:30 2013 Cannot open TUN/TAP dev /dev/as0t5: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:30 2013 Cannot open TUN/TAP dev /dev/as0t6: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:30 2013 Cannot open TUN/TAP dev /dev/as0t7: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:30 2013 Cannot open TUN/TAP dev /dev/as0t8: No such file or directory (errno=2)’] service failed to start or returned error status process started and then immediately exited: [‘Thu Aug 8 01:39:30 2013 Cannot open TUN/TAP dev /dev/as0t9: No such file or directory (errno=2)’] service failed to start or returned error status

@mario: Try running <pre>modprobe tun</pre> as root and restart OpenVPN - does that fix it?

thank you for your advice, but still do not work this came out

root@server:~# modprobe tun WARNING: Deprecated config file /etc/modprobe.conf, all config files belong into /etc/modprobe.d/. FATAL: Module tun not found. root@server:~# modprobe Usage: modprobe [-v] [-V] [-C config-file] [-d <dirname> ] [-n] [-i] [-q] [-b] [-o <modname>] [ --dump-modversions ] <modname> [parameters…] modprobe -r [-n] [-i] [-v] <modulename> … modprobe -l -t <dirname> [ -a <modulename> …]

@mario: Run <pre>sudo apt-get update && sudo apt-get dist-upgrade -y</pre>

Set your droplet to boot from the latest Ubuntu 12.04 (x32/x64 depending on your droplet’s OS image) kernel. Power it off via SSH <pre>sudo poweroff</pre> and boot it up from our control panel.

Then run <pre>modprobe tun</pre> and paste the output.

OK, this has been killing me. I’d like my VPN server to be semi-strong 256, not watching cat videos 128. Over the last week I have searched all over for how to do this, and started a thread on openvpn.net in regards to this. Nothing :( Can anyone please guide me on how this could be accomplished?

I was able to find how to set the handshake to 256, but not how to verify that the actual data stream is 256. The reason I suspect it is not is due to the fact that when I looked at the self generated SSL cert that was created as part of the process, it shows as 128.

So I guess I have two questions:

1. How to re-set up my openvpn build so it is 256?
2. How can I verify that it is indeed 256 after it is all said and done?

Thanks!