Rsync dontinuously throwing authentication errors

TrueNAS General
1

I have set up SSH backup to TrueNas Scale from Synology NAS using their Hyperbackup app.

Steps:

  1. Created a user called backupuser in Truenas with proper permissions
  2. Pointed the user to a directory on the pool
  3. In the synology app setup a job using ssh with the backupuser credentials
  4. Started the backup job and it is backing up folders to the Truenas server as expected.
  5. After running for several hours (Large, 4,8 TB backup) it hangs and I get multiple notifications from TrueNas below:

TrueNAS @ truenas

New alert:

74 SSH login failures in the last 24 hours: ... first 70 messages skipped ... 02 Sep 15:32:58: Failed password for backupuser from 192.168.88.201 port 41720 ssh2 02 Sep 15:32:58: Failed password for backupuser from 192.168.88.201 port 41720 ssh2 02 Sep 16:03:06: Failed password for backupuser from 192.168.88.201 port 51690 ssh2 02 Sep 16:03:06: Failed password for backupuser from 192.168.88.201 port 51690 ssh2

The following alert has been cleared:

72 SSH login failures in the last 24 hours: ... first 68 messages skipped ... 02 Sep 15:17:01: Failed password for backupuser from 192.168.88.201 port 50012 ssh2 02 Sep 15:17:01: Failed password for backupuser from 192.168.88.201 port 50012 ssh2 02 Sep 15:32:58: Failed password for backupuser from 192.168.88.201 port 41720 ssh2 02 Sep 15:32:58: Failed password for backupuser from 192.168.88.201 port 41720 ssh2

Current alerts:

74 SSH login failures in the last 24 hours: ... first 70 messages skipped ... 02 Sep 15:32:58: Failed password for backupuser from 192.168.88.201 port 41720 ssh2 02 Sep 15:32:58: Failed password for backupuser from 192.168.88.201 port 41720 ssh2 02 Sep 16:03:06: Failed password for backupuser from 192.168.88.201 port 51690 ssh2 02 Sep 16:03:06: Failed password for backupuser from 192.168.88.201 port 51690 ssh2

There is nothing on the Synology logs indicating authentication failure. It just reports backup is in progress.

No fire wall on either machine. Also, the port numbers in the alerts seem to be random.

2

Same issue here. Have you been able to figure anything out?

3

No Ideas yet. Not getting as many failures but still have one or two notifications per day. Again, nothing in the Synology logs.

4

Exactly the same thing here. I’ve tried to figure out a way to use ssh keys, which truenas will accept, but no way I’ve found to have hyperbackup on the Synology side use it.

5

I originally wanted to user Rsync and did for a while. There too something weird happened and the backup jobs kept failing and when I tried to create the job again it refused to connect. That is why I went to ssh backup but get these random failure notices from TruNAS. The backups seem to work as far as I know.