Hi, there. I’m new user Mikrotik . I have several boards with wireless system. But here is attacking someone, how to disable and block it, pls help to me solve this problem.. here is error log: system error critical. login failure for user root from xxx.xxx.xxx.xxx via telnet. this log is many times.. how to solve it.
You can drop port 23 from your WAN interface
Go to “New Terminal” and type:
/ip firewall filter
add action=drop chain=input dst-port=23 in-interface=WAN protocol=tcp
Where WAN is your WAN interface
Or turn off telnet.
Ip>services disable telnet