Windows messenger and UpnP security

[Stefano Ferrante]

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Hello all,
I was wondering...if I enable UpnP on my hardware firewall and set windows
xp pro to use UpnP support in order to have an audio and video conversation
with a trojan / viruses infected party, am I likely to be infected either?


Thanks for any help,

Stefano

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[Jonathan Kay [MVP]]

Greetings Stefano,

No. The ports are opened and forwarded when the conversation starts and removed when it
ends. As well, they're UDP ports and if you had a trojan or virus on the system listening to
these ports, Messenger wouldn't chose those ones anyway as they'd be in use. So the answer
is no.

--
Jonathan Kay
Microsoft MVP - Windows Messenger/MSN Messenger/Windows Live Messenger
Associate Expert
http://www.microsoft.com/windowsxp/expertzone/
Messenger Resources - http://messenger.jonathankay.com
All posts unless otherwise specified are (c) 2006 Jonathan Kay.
You *must* contact me for redistribution rights.
--


"Stefano Ferrante" > wrote in message
...
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Hello all,
> I was wondering...if I enable UpnP on my hardware firewall and set windows
> xp pro to use UpnP support in order to have an audio and video conversation
> with a trojan / viruses infected party, am I likely to be infected either?
>
>
> Thanks for any help,
>
> Stefano
>
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.2 (MingW32) - GPGshell v3.47
>
> iD8DBQFD0AB0tWeA8MqJcFYRAttbAJ9/mkgCjXrPk2CTJa7r7ndRM39OKQCbBa/+
> LeJgWHwqm1ab3J4yqAeIwTk=
> =gyum
> -----END PGP SIGNATURE-----
>
>

[Stefano Ferrante]

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Hash: SHA1


"Jonathan Kay [MVP]" > ha scritto nel
messaggio ...
>
> No. The ports are opened and forwarded when the conversation starts and
removed when it
> ends. As well, they're UDP ports and if you had a trojan or virus on the
system listening to
> these ports, Messenger wouldn't chose those ones anyway as they'd be in
use. So the answer
> is no.
>

Thanks Jonathan for your fast reply...you are unvaluable.

Stefano

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[Jonathan Kay [MVP]]

I try :)

--
Jonathan Kay
Microsoft MVP - Windows Messenger/MSN Messenger/Windows Live Messenger
Associate Expert
http://www.microsoft.com/windowsxp/expertzone/
Messenger Resources - http://messenger.jonathankay.com
All posts unless otherwise specified are (c) 2006 Jonathan Kay.
You *must* contact me for redistribution rights.
--

"Stefano Ferrante" > wrote in message
...
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
>
> "Jonathan Kay [MVP]" > ha scritto nel
> messaggio ...
>>
>> No. The ports are opened and forwarded when the conversation starts and
> removed when it
>> ends. As well, they're UDP ports and if you had a trojan or virus on the
> system listening to
>> these ports, Messenger wouldn't chose those ones anyway as they'd be in
> use. So the answer
>> is no.
>>
>
> Thanks Jonathan for your fast reply...you are unvaluable.
>
> Stefano
>
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> Version: GnuPG v1.4.2 (MingW32) - GPGshell v3.47
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> iD8DBQFD0euWtWeA8MqJcFYRAqLOAJ0RMWYGKARGF7fvsxVCNy roE1gLLgCfTZO5
> +9OmfrKBj5qPRNXCbjFMtsw=
> =PNwU
> -----END PGP SIGNATURE-----
>
>