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Connect two openvpn servers

Posted on 2013-06-14
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Last Modified: 2013-06-14
Hello,

How can I connect two openvpn servers together - so that they are the client of each other as well, and so clients of each can talk to each other - please see attached.

They will also act as a fail over for each other, So Client 1 will connect to OpenVPN2 if OpenVPN1 goes down etc

Any ideas?

the second answer here: http://serverfault.com/questions/211761/openvpn-multiple-servers-on-the-same-subnet-high-availability?rq=1 kind of is what I am after, but not sure from that how each openvpn server is connected to each other.

thanks
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Question by:AUCKLANDIT
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arnold earned 500 total points
ID: 39249193
On each OpenVPN "server" you need to setup the openVPN client component to the other to establish a site to site VPN.

You then within the push route rules for the connecting clients, include the IP segments of the remote openVPN server

http://openvpn.net/index.php/access-server/section-faq-openvpn-as/27-server-config/209-how-do-i-setup-openvpn-access-server-to-use-site-to-site.html
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Expert Comment

by:Daniel McAllister
ID: 39249258
Setting up 2 OpenVPN servers to talk to each other (and route between them) is not difficult (so long as the LAN routes are compatible)... the hard part will be the failover -- I'm not sure how that would work, because each OpenVPN server should have a unique set of keys.


Dan
IT4SOHO

PS: If you want to move forward with setting up the two OpenVPN servers & setting the routing to pass between them, I'd be happy to write a quick HOTWO (probably make an article of it)
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Author Comment

by:AUCKLANDIT
ID: 39249362
Thanks.

I bought a couple of cheap VPS last night and had it working within minutes once I realised you can have client running on a Access Server as well.

The failover is just using DNS with users cert on both Access Servers - have done that before.
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Author Closing Comment

by:AUCKLANDIT
ID: 39249365
Thanks
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Author Comment

by:AUCKLANDIT
ID: 39249531
I think I was a bit premature in accepting this one as thought I had it right but don't seem to.

I have opened another one:
http://www.experts-exchange.com/Software/System_Utilities/Remote_Access/VPN/Q_28158098.html
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