Can't see other computer with trusted zone in firewall

I WANT TO CONNECT MY 2 PC TO OTHER WHEN FIREWALL IS OFF THIS IS CORRECT WHEN FIREWall on i have problem to connect , i go to stealth port and defined a new trust and global rules changed but when i wan to connect i see error and with turn off firewall i can connect what i must to do to connect to other pm when firewall is on?

Edit by EricJH; split from other topic

What OS are you on?