Billion BiPAC 4700AZ, Руководство пользователя

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Cipher: OpenVPN uses all the ciphers available in the OpenSSL package to encrypt both the data and
channels. Select the encryption method.
Hash: To establish the integrity of the datagram and ensures it is not tampered with in transmission.
There are options: Message Digest 5 (MD5) and Secure Hash Algorithm (SHA1, SHA256). SHA1 is
more resistant to brute-force attacks than MD5. However, it is slower.
Keepalive: Enable to allow the router to check the connectivity to the peer every 10 seconds (can be
changed based on need) by sending ping package to keep the OpenVPN tunnel active.
Interval: This period between Pings is set to monitor the connection status. Default interval setting is
10 seconds. Time interval can be set from 0 to 3600 second.
Timeout: Restart if receiving no response until the timeout period expires, by default, 120s.
Click Save button to save your changes.