Changes

==OpenVPN configuration type==

==OpenVPN configuration type==

Before configuring anything you should first know what type of OpenVPN connection suits your needs the best. The key things to be considered here are the type of connection ('''TUN''' ('''tunnel''') or '''TAP''' ('''bridged''')), the data transfer protocol ('''User Datagram Protocol''' ('''UDP''') or '''Transmission Control Protocol''' ('''TCP''')) and authentication ('''TLS''' or '''Static key'''). Here is a short overview of the differences:

Before configuring anything you should first know what type of OpenVPN connection suits your needs the best. The key things to be considered here are the type of connection ('''TUN''' ('''tunnel''') or '''TAP''' ('''bridged''')), the data transfer protocol ('''User Datagram Protocol''' ('''UDP''') or '''Transmission Control Protocol''' ('''TCP''')) and authentication type ('''TLS''' or '''Static key'''). Here is a short overview of the differences:

* Type

* Type

** TUN (tunnel) - simulates a network layer device and it operates with layer 3 packets like IP packets. TUN is used for routing and connecting multiple clients to a single server.

** TUN (tunnel) - simulates a network layer device and it operates with layer 3 packets like IP packets. TUN is used for routing and connecting '''multiple''' clients to a single server.

** TAP (bridged) - simulates a link layer device and it operates with layer 2 packets like Ethernet frames. TAP is used for creating a network bridge between '''two''' Ethernet segments in different locations.

** TAP (bridged) - simulates a link layer device and it operates with layer 2 packets like Ethernet frames. TAP is used for creating a network bridge between '''two''' Ethernet segments in different locations.

** Static key - uses a pre-shared Static key. Can only be used between two peers.

** Static key - uses a pre-shared Static key. Can only be used between two peers.

An overview of most of these types is provided in this article. Concerning TCP vs UDP, we will be using UDP for all examples. Choosing between TCP and UDP doesn't affect the rest of the configuration, so you can still follow the given examples no matter which protocol you are using. Simply choose the one that suits your purposes.

Overviews on most of these types and variations are provided in this article. Concerning TCP vs UDP, we will be using UDP for all examples. Choosing between TCP and UDP doesn't affect the rest of the configuration, so you can still follow the given examples no matter which protocol you are using. Simply choose the one that suits your purposes.

==TLS Authentication==

==TLS Authentication==