vpn: client hangs with "openvpn: AEAD Decrypt error: cipher final failed"

Advanced feature discussion, beta programs and unsupported "Labs" features.
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by kevink00 » Mon Jan 11, 2021 7:41 pm
Hi --I've been using the Sonic VPN service for at least a few years without any issue whatsoever. However, within the past few months or so I've noticed traffic will hang for a few moments. My quick workaround is to just bypass using the vpn for that time. I recently checked the logs of my vpn clients and found a series of one or the other message, repeating for several minutes. I did some searching and was unable to find anything conclusive. My client config hasn't changed for years + I just compared with the one offered https://ovpn.sonic.net and the options are identical.

I'm using openvpn-2.4.9-1.el7.x86_64 on CentOS Linux release 7.8.2003 (Core)

Thanks for any suggestions on this!

Code: Select all

Jan 11 08:46:15 proxy03 openvpn: AEAD Decrypt error: bad packet ID (may be a replay): [ #1662563 ] -- see the man
 page entry for --no-replay and --replay-window for more info or silence this warning with --mute-replay-warnings
Jan 11 08:46:15 proxy03 openvpn: AEAD Decrypt error: bad packet ID (may be a replay): [ #1662564 ] -- see the
 man page entry for --no-replay and --replay-window for more info or silence this warning with --mute-replay-warnings


Jan 11 18:51:30 proxy03 openvpn: AEAD Decrypt error: cipher final failed
Jan 11 18:51:30 proxy03 openvpn: AEAD Decrypt error: cipher final failed
Jan 11 18:51:32 proxy03 openvpn: AEAD Decrypt error: cipher final failed
Jan 11 18:51:32 proxy03 openvpn: AEAD Decrypt error: cipher final failed
by kevink00 » Fri Jan 15, 2021 6:43 am
Have there been any changes on the VPN servers in the past 3-6 months that might be having an impact here?
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