[RndTbl] sshd: Corrupted MAC on input.
Gilbert E. Detillieux
gedetil at cs.umanitoba.ca
Wed Jul 29 11:37:17 CDT 2020
I've been getting errors such as the following on one of my systems
Jul 29 11:15:33 localhost sshd: Corrupted MAC on input.
Jul 29 11:15:33 localhost sshd: ssh_dispatch_run_fatal:
Connection from 126.96.36.199 port 61436: message authentication code
These tend to happen during large rsync runs, which causes rsync to abort.
Following some advice I found on The Google, I tried setting various
different values for the "MACs" keyword in sshd_config, but it doesn't
seem to change the behaviour. (And, yes, I did remember to restart the
sshd service after each config change. Running "ssh -vvv" to the host
shows that it's negotiating the new MAC protocol.)
What's the likely cause of this? A bad NIC? Bad RAM? (I'm guessing
something is corrupting the packets once in a while, but I'm not sure
what. If so, it seems to get past TCP's error correcting.)
Has anyone else come across this before, and have a suggestion?
Gilbert E. Detillieux E-mail: <gedetil at cs.umanitoba.ca>
Dept. of Computer Science Web: http://www.cs.umanitoba.ca/~gedetil/
University of Manitoba Phone: (204)474-8161
Winnipeg MB CANADA R3T 2N2 Fax: (204)474-7609
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