On Jan 21, 2010, at 7:29 PM, Edward Ned Harvey wrote:

>> And what services would those be? If Mac OS X is "pretty loose about
>> opening things up to the network", can you tell me which network
>> services are running on an out-of-the-box OS X install? And how that
>> compares to other OS installs?
> 
> Of particular interest to me, iTunes.  I work at a company which is one of
> many companies inside an incubator company.  We have our own private
> network, isolated by Cisco firewall.  Even from inside my company's private
> LAN, we can see all the Macs that other people have at other companies ...
> and listen to their music without asking anybody permission.
> 
> By default, the most dangerous protocols are not enabled.  Screen sharing
> (vnc), file sharing, ssh, etc.  But if anyone has them turned on, bonjour
> simply announces it to the whole network.  "Yup, I have vnc enabled.  Any
> takers?  Anyone?"
> 
> It's not hard to conceive there may be exploitable vulnerabilities in those
> protocols ... or whoever enabled those protocols might have used weak
> passwords.  I don't bother trying to get into other peoples' systems, but I
> know I do what I can as IT person for my company, to prevent my users from
> doing such things.  First and foremost, enable the firewall before I give a
> laptop to a user, and enforce a password complexity requirement.

Or simply have your switches set up to not route Bonjour traffic...

-Pete
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