PuTTY + PortForwarding + WinBox = Disconnect

RouterOS General
1

There is PuTTY 0.61 and RB/750 with RouterOS 5.12.

When PuTTY is connected to Linux-driven host, then redirecting port 8291 to ROS-driven neighbor (for example, 10.0.0.2:8291) works fine.

But when PuTTY is connected directly to ROS box, then redirecting 8291 to 127.0.0.1:8291
causes PuTTY to disconnect with the fatal error: “Strange packet received: type 3”
immediately after Winbox is successfully authorized.

Google says that problem is not ROS-specific: https://supportforums.cisco.com/thread/2013927
..but their workaround (Connection->SSH->Kex->Max xxx before rekey = 0) does not work for me.

2

The problem is more common - it happens with any port forwarding to any host, not only 8291 to localhost.
For example, forwarding SSH or HTTP connection to another host is terminated with the same error.

Question to the ROS team:
Do you need additional diagnostic to approving this bug?

3

please write to support@mikrotik.com