LinkSys wrt54gl Router provides few ways how to setup and administrate it.
- web interface (http://your-router-ip)
- telnet (Run > CMD > telnet your-route-ip > root > root_pass)
- ssh (by default this feature is disabled)
So to enable this feature download DD-WRT firmware be sure that you download Standard Generic firmware.
After that install it (from web interface Administration > Firmware Upgrade)
!!!!NOTE Please make back up of your curent configuration and backup of you previous firmware!!!!!
After successful installation go to Services > services and enable SSHd
Now you will be able to connect to router via ssh