synergyc fun over ssh

Client side

 synergyc -f localhost
 ssh -f -N -L localhost:24800:host_server:24800 host_server

Server Side

 cat /etc/synergy.conf
 section: screens
 t520:
 t420:
 end
 section: aliases
 t420:
 t420s
 t520:
 t520.local
 end
 section: links
 t520:
 down = t420
 t420:
 up = t520
 end
 section: options
 screenSaverSync = false

 synergys -f --config /etc/synergy.conf