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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Session key renegotiation
To ensure the security of each OpenVPN connection, the server periodically renegotiates the secret key for the data channel with each client. This is controlled using three options:
reneg-sec N: Renegotiate data channel key after N seconds (default is 3600)reneg-bytes N: Renegotiate data channel key after N bytes (default=0=off)reneg-pkts N: Renegotiate data channel key after N packets (default=0=off)
If a VPN client is experiencing periodic timeouts when connected to the server, it is often useful to vary these parameters. If you set the reneg-sec parameter at a very short interval, however, the performance of the VPN will be severely degraded.
The reneg options can be specified on either the client or the server side, ...
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