Aren't port numbers 0-1023 privileged under Unix and therefore only to applications running as root? If you're running your application as a regular user, it can't open a listening socket on port 123. It should still be perfectly able to send requests to port 123 on other hosts and receive answers to those requests.

-Stefan

On Nov 17, 2008, at 1:40 PM, Gerriet M. Denkmann wrote:


I am trying to move a Cocoa app from Tiger to Leopard.
This program wants to send and receive on port 123 (Network Time Protocoll) but it never gets no answers on Leopard. On TIger there was a firewall, where I could open port 123 in System Preferences.

How can I do this in Leopard?

Kind regards,

Gerriet.

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