You need to specify the right network port to enable/disable network access for a program with your firewall.
Paul W. Frields
stickster@gmail.com
Fran Dieguez
frandieguez@gnome.org 2011.

# Commonly-used network ports

This is a list of network ports commonly used by applications which provide network services, like file sharing or remote desktop viewing. You can change your system's firewall to block or allow access to these applications. There are thousands of ports in use, so this table isn't complete.

Porto | Nome | Descrición
--- | --- | ---
5353/udp | mDNS, Avahi | Allows systems to find each other, and describe which services they offer, without you having to specify the details manually.
631/udp | Impresión | Permítelle enviar traballos de impresión a unha impresora de rede.
631/tcp | Impresión | Permítelle compartir a súa impresora con outras persoas na rede.
5298/tcp | Presenza | Allows you to advertise your instant messaging status to other people on the network, such as "online" or "busy".
5900/tcp | Escritorio remoto | Permítelle compartir o seu escritorio para que outras persoas poidan velo ou para unha asistencia remota.
3689/tcp | Compartir música (DAAP) | Permítelle compartir a súa biblioteca de música con outras persoas na súa rede.