Release: 8.2.5 or earlier
To fix this issue,
Edit the /etc/ssh/ssh_config file and go down to the MACs line (around line 41). It should have this listed:
On that same line, add the new ciphers so that it looks like this:
MACs hmac-sha1,hmac-sha2-256,hmac-sha2-512,[email protected],[email protected]
Save the file and then reestablish your SSH session and try running pv_monitor again.
These extra ciphers will be added by default in Security Analytics version 8.2.6.