I want to install OpenVPN on my server to accept incoming connections. I have read the moreless clear tutorials but one issue remains unclear: Does OpenVPN needs a second network adapter (say eth1) which listens for connections and bridges traffic through eth0? Can it be done with a single network adapter?
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The LTS server guide article on OpenVPN doesn't mention network adapters at all, except for a specific example of bridging two of them. So, in general you only need one. That's how I use it.– muruFeb 4, 2016 at 13:39
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community.openvpn.net/openvpn/wiki/…– charlesbridgeFeb 4, 2016 at 13:44
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1 Answer
It can be done with a single adapter, however you need to setup multiple configuration files in a linux machine to do so. https://community.openvpn.net/openvpn/wiki/HOWTO --> Go down to "Editing the server configuration file"
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Yes, it can be done. It is preference between using one adapter and multiple. If one works for what you want to do, do it.– KaliFeb 4, 2016 at 14:00
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Want to make the right choice here. The server runs some databases and services among other things (some of them like bind to the outside world) and I´m in doubt if installing OpenVPN will somehow tamper with the rest of the network traffic– alvarocFeb 4, 2016 at 14:10
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Any looping, or DHCP problems would be catastrophic for a server with a number of clients. Downside, you might have to reconfigure some ports and protocols. Plus now you have a failover.– KaliFeb 4, 2016 at 14:17