August 2015
Intermediate to advanced
364 pages
7h 35m
English
Content preview from Mastering OpenVPNBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 6. Client/Server Mode with tap Devices
The other deployment model for OpenVPN is a single server with multiple remote clients capable of routing Ethernet traffic. We refer to this deployment model as client/server mode with tap devices.
The main difference between tun and tap mode is the type of adapter used. A tap adapter provides a full virtual Ethernet (layer 2) interface, whereas a tun adapter is seen as a point-to-point (layer 3) adapter by most operating systems. Computers connected using (virtual) Ethernet adapters can form a single broadcast domain, which is needed for certain applications. With point-to-point adapters, this is not possible. Also, note that not all operating systems support tap adapters. For example, both iOS and ...
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