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Re: [Fed-Talk] OS X chatting with DNS server via port 5353



Port 5353 is for multicast DNS - which is part of Bonjour.

For a list of ports used by Apple applications:
http://docs.info.apple.com/article.html?artnum=106439

On Mar 15, 2007, at 8:54 AM, Michael wrote:

Why does OS X continually chat with your DNS server via port 5353?

I have verified that this is not DNS lookups, i.e. I lose no functionally when I block this traffic; however, depending on how this traffic is blocked my logs fill up with different types of messages.

I gather OS X is trying to advertise to the DNS server what services it offers. This is something that should be possible to turn off without creating megabytes of logs.

Michael

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 >[Fed-Talk] OS X chatting with DNS server via port 5353 (From: Michael <email@hidden>)



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