Re: MSN messenger audio connections & XP SP2?

From: Andy Weller (getstuff_at_dsl.pipex.com)
Date: 06/28/04 

Date: Mon, 28 Jun 2004 06:57:11 +0100

Hi Jonathan
Thanks for the screenshot - is this how firewall is configured to permit
OUTBOUND connections from your PC by specified programs? (ie similar to
Zonealarm "trusting" specified programs). Or is this screen somehow
related to the program INBOUND access attempts that the firewall will let
through?

My puzzle is still that for inbound protection, the new XP firewall will
surely be working in "stealth" mode - ie the PC and ports are not visible to
any inbound intruder or other traffic. If so, then I'm still puzzled how
another MSN messenger audio session will ever "see" the target PC to connect
to - unless the firewall lets all intruders "see" the ports and the PC.

Sorry if I'm not very good at explaining this security stuff, but I am still
unsure how it can work!

Cheers

Andy
----------------------------------------------------------------------------
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If so, I the issue i was trying to explore is the way that the firewall
blocks INBOUND access attempts - which is where MSN messenger

"Jonathan Kay [MVP]" <msnewsreplies@jonathankay.com> wrote in message
news:ubqop6LXEHA.2636@TK2MSFTNGP10.phx.gbl...
> Hi Andy,
>
> Actually the current Windows XP Firewall supports Universal Plug and Play
(UPnP) and will
> automatically open the necessary ports for Messenger. The SP2 firewall
also supports UPnP,
> but in SP2, this is even expanded further by allowing you to be specific
about which
> applications can use the Internet connection (in this case MSN Messenger
6.2).
>
> Just for fun, I took a screenshot of what it looks like (and for reference
purposes, it put
> "MSN Messenger 6.2" there by itself; another new feature of SP2 and MSN
Messenger 6.2):
> http://messenger.jonathankay.com/screens/sp2firewall.png
> ____________________________________________
> Jonathan Kay
> Microsoft MVP - Windows Messenger/MSN Messenger
> Associate Expert
> http://www.microsoft.com/windowsxp/expertzone/
> Messenger Resources - http://messenger.jonathankay.com
> All posts unless otherwise specified are (c) 2004 Jonathan Kay.
> You *must* contact me for redistribution rights.
>
> "Andy Weller" <getstuff@dsl.pipex.com> wrote in message
news:2k8qcbF18p1f4U1@uni-berlin.de...
> > Jonathan
> >
> > Great news! I was hoping to use the new XP SP2 firewall, and that it
would
> > allow me to connect both Audio & webcam via MSN messenger to keep in
touch
> > with my daughter at university.
> >
> > Does this news mean that MS have somehow overcome the audio issue in
> > http://messenger.msn.com/Help/Issues.aspx (April 2004) which says:
> >
> > "To ensure we deliver the best audio technology for computer-to-computer
or
> > computer-to-phone communications from MSN Messenger, we have made
technical
> > enhancements. This means you will only be able to use Messenger version
4.5
> > or higher for these features if:
> > a.. You are not behind a firewall or
> > b.. You are behind a Universal Plug and Play (UPnP) firewall or
> > c.. You are using a UPnP-enabled Network Address Translation (NAT)
device"
> >
> > Maybe an obvious question, but I'd expected the XP firewall would have
> > stopped MSN messenger audio connections - how does it allow MSN
messenger
> > audio through without compromising security?
> >
> > Cheers
> >
> > Andy
> >

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