MikroTik The Dude 6.46.3 or older can not connect to RouterOS 6.46.4 or newer.

I recently had to troubleshoot an issue with “The Dude” v6.46.3 that could not connect to MikroTik v6.46.5. Interestingly enough, target MikroTik devices was showing nothing in its logs (no successful or failed connection attemts). I don’t remember what The Dude was showing, but it was not anything specific that could help to understand what’s wrong like authentication failure.

Captured traffic dump was showing normal TCP session over port 8291 what was active for 30 seconds and then normally terminated by The Dude server. Crazy!

I remember seeing changes regarding Winbox authentication method in some of recent RouterOS release notes. Simple google search showed me this thread - v6.46.4 [stable] is released!:

To get RouterOS data from the devices, Dude now requires RouterOS to be 6.46.4 or newer. The other stats and of course Ping will still work. This is due to security measures being strengthened.

Sure enough, here is what Release notes for 6.46.4 says:

Important note!!!

- The Dude server must be updated to monitor 6.46.4 and v6.47beta30+ RouterOS type devices.
- The Dude client must be manually upgraded after upgrading The Dude server.
- To get RouterOS data from the devices, The Dude now requires RouterOS to be 6.46.4 or v6.47beta30+.

I decided to downgrade MikroTik device to 6.46.3, but it didn’t fully fix the issue. The Dude started showing some specific error:

std failure: not allowed (9), next attempt at 18:35:57

To fix that you have to add “dude” into “full” user group:

/user group
set full name=full policy=local,telnet,ssh,ftp,reboot,read,write,policy,test,winbox,password,web,sniff,sensitive,api,romon,dude,tikapp skin=default

Good luck!

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