Add readme files 'README.error' and 'README.performance'.
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README.error
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README.error
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# ---
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# Error: AEAD Decrypt error: bad packet ID
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# ---
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# see also:
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# https://askubuntu.com/questions/1136003/aead-decrypt-error-bad-packet-id-on-openvpn-using-udp
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# Adjust MTU settings
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#
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# Note:
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# =====
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#
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# With a TUN-style tunnel over UDP using the default TLS options,
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# the per-packet overhead is:
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#
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# - 41 bytes security layer overhead (includes packet tag (1),
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# HMAC-SHA1 signature (20), initialization vector (16),
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sequence number (4))
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#
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# - 28 bytes tunneling overhead (includes IP + UDP header)
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#
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# - Total: 69 bytes per packet
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#
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# => maybe 'mssfix 1431' is sufficient
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#
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tun-mtu 1500
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mssfix 1300
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push "tun-mtu 1500"
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# ---
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# End: Error: AEAD Decrypt error: bad packet ID
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# ---
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20
README.performance
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README.performance
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# ---
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# Performance
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# ---
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# see also: https://blog.doenselmann.com/openvpn-durchsatz-optimieren/
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# Der erste Versuch den OpenVPN Durchsatz zu optimieren besteht darin, die
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# Größe des Zwischenspeichers der Pakete anzupassen.
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#
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# Wird UDP als Protokoll verwendet, sollte mit einer fest eingestellten Größe
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# ein besseres Ergebnis erzielt werden.
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sndbuf 393216
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rcvbuf 393216
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push "sndbuf 393216"
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push "rcvbuf 393216"
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# ---
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# End: Performance
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# ---
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