Page 1 of 1

Blocking UDP traffic

Posted: Sat Jul 14, 2007 10:00 pm
by gberger
Question for a tecchie.

I'm running a single iMac G4, OS 10.4.6, via dial-up (shortly to convert to cable broadband).

My OS X firewall is set to deny UDP inbound traffic, as I don't game or download streaming video; however, LS default allows outbound UDP traffic on certain ports to certain addresses.

Should I change the permission for outbound UDP traffic from accept to deny? Does it matter?

TIA, George (The Old Fud)

Posted: Sat Sep 08, 2007 9:31 am
by jwiegley
You probably have found the answer to this, but you should most certainly allow certain types of outbound UDP traffic, most notably:

* DHCP (also called "bootp")
* DNS
* NTP

John