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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TCP protocol and different ports
The default protocol that OpenVPN uses is UDP, as it is generally more suitable for VPN connections. However, if the TCP protocol is required, then the preceding example needs to be modified only slightly:
On the listening end, start the OpenVPN server instance:
[root@server] # openvpn \ --ifconfig 10.200.0.1 10.200.0.2 \ --dev tun \ --proto tcp-server
On the client side, the code is as follows:
[root@client] # openvpn \ --ifconfig 10.200.0.2 10.200.0.1 \ --dev tun \ --proto tcp-client \ --remote openvpnserver.example.com
OpenVPN will now connect over TCP port 1194. It is also possible to override the port number using the --port parameter, for example, --port 5000.
The TAP mode
If non-TCP/IP traffic needs ...
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