WinBox disconnection

Hi all,
I’m experiencing several disconnection (every 5-10 min) while managing MT remotely via WinBox. :frowning:
TCP port 8291 is opened and disconnections occour also if ping responds and telnet session remains up. Where do I have to look for reason od this behaviour?

Rgds

/ip firewall filter
add chain=forward action=accept dst-port=8291 protocol=tcp
add chain=input action=accept dst-port=8291 protocol=tcp
Put those rules above all other that way no other rule will affect your winbox connection