Special login can be used to control devices connected to router over serial port.
Routers R1 and R2 are connected with serial cable and PC is connected to R1 via ethernet. Lets say we want to access router R2 via serial cable from our PC. To do this you have to set up serial interface proxy on R1. It can be done by feature called special-login.
Note that by default console is bound to serial port. So the first task is to unbind console from serial simply by disabling entry in /system console menu:
[admin@MikroTik] /system console> print Flags: X - disabled, U - used, F - free # PORT TERM 0 X serial0 vt102
Next step is to add new user, in this case serial, and bind it to the serial port
[admin@MikroTik] > /user add name=serial group=full [admin@MikroTik] > /special-login add user=serial port=serial0 disabled=no [admin@MikroTik] > /special-login print Flags: X - disabled # USER PORT 0 serial serial0
Now we are ready to access R2 from our PC.
maris@bumba:/$ ssh firstname.lastname@example.org [Ctrl-A is the prefix key] R2 4.0beta4 R2 Login: [admin@R2] >
To exit special login mode press Ctrl+A and Q
[admin@MikroTik] > [Q - quit connection] [B - send break] [A - send Ctrl-A prefix] [R - autoconfigure rate] Connection to 10.1.101.146 closed.