Some bug in MT older version (6.xx... - 6.40.5...) ? Virus telnet?

RouterOS General
1

I receive many telnet connectiom from neighbours of mikrotiks. Usualy older versions Mikrotik ROS. How about correcet, update only? After update 6.40.5 ip service is OK.
mt2.jpg
mt1.jpg

2

Upgrade will fix it.

http://forum.mikrotik.com/t/routeros-making-unaccounted-outbound-winbox-connections/117836/1