[FUG-BR] Bloquear Skype (IPFW)

[Marcelo Lima]

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Marcelo Lima wrote:
> Flávio Barros wrote:
> 
>>>Senhores qual a porta que o skype trabalha ?

I can't connect to Skype from work or due to a restrictive firewall.
Which ports need to be opened in order to use Skype?

If you aren't familiar with firewalls or ports, it may be a good idea to
ask a system administrator or tech-savvy friend to help you. The minimum
requirement is that Skype needs unrestricted outgoing TCP access to all
destination ports above 1024 or to ports 80 and 443 (the former is
better, however). If you don't allow either of those, Skype will not
work reliably at all. Voice quality and some other aspects of Skype
functionality will be greatly improved if you also open up outgoing UDP
traffic to all ports above 1024, and allow UDP replies to come back in.

In the quest for even better voice quality, it is also advisable to open
up incoming TCP and/or UDP to the specific port you see in Skype
Options. This port is chosen randomly when you install Skype. In the
case of firewalls, this should be easy to arrange. In some routers,
however, you cannot configure incoming UDP at all (but you still can
configure incoming TCP port forwarding, which you could/should do).

The randomness in port selection is to improve NAT traversal for cases
where several users are behind the same NAT; if they all used same
ports, many NATs would behave in a way that would reduce Skype voice
quality.

Also make sure that you have the latest version installed. You can do it
by clicking Check for Update in Help menu in Skype or just go to the
download page where you can always download the latest version.

- --
Marcelo Lima
Administrador de Redes
Departamento de Redes e Tecnologia

E-mail: lima em catho.com.br
Fone: 11 31770700 ramal 313
Celular: 11 77144077
Nextel: 55*5*7858
ICQ: 235332632 - MSN: snapitow em hotmail.com
- -----------------------------------------------
Catho Online - Seu sucesso é o nosso negócio
http://www.catho.com.br
http://www.catho.cl
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