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Home > Archive > Red Hat Security > January 2004 > MSN Messenger Behind a NATting IPtables Firewall
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| Author |
MSN Messenger Behind a NATting IPtables Firewall
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| Meron Lavie 2004-01-23, 7:48 pm |
| I have a Linux IPtables firewall protecting my LAN. I am having all sorts of
problems with MSN Messenger. In particular - getting LDAP lists of all
people on line, etc. I also am having trouble with audio or video.
Is there a definitive article on the subject?
I apologize to the group for using a Micro$oft product (such as MSN
Messenger)...
TIA.
Lavie
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| NeoSadist 2004-01-23, 7:48 pm |
| Meron Lavie wrote:
quote:
> I have a Linux IPtables firewall protecting my LAN. I am having all sorts
> of problems with MSN Messenger. In particular - getting LDAP lists of all
> people on line, etc. I also am having trouble with audio or video.
>
> Is there a definitive article on the subject?
>
> I apologize to the group for using a Micro$oft product (such as MSN
> Messenger)...
>
> TIA.
>
> Lavie
It depends on how your firewall is set up. Are you just blocking/allowing
ports, or is this a stateful machine thing?
MSN Messenger logs in over 443 (http), and 1863. It uses 6891-6900 port
range for messaging. Also, for video conferencing, I believe it needs
access to random dynamic (1024-65535) ports via udp.
Also, please don't call them Micro$oft / Winblows, etc. It's unprofessional
coming from someone who chose an alternative to Microsoft Windows.
--
I fell asleep reading a dull book, and I dreamt that I was reading on,
so I woke up from sheer boredom.
| |
| NeoSadist 2004-01-23, 7:48 pm |
| Meron Lavie wrote:
quote:
> I have a Linux IPtables firewall protecting my LAN. I am having all sorts
> of problems with MSN Messenger. In particular - getting LDAP lists of all
> people on line, etc. I also am having trouble with audio or video.
>
> Is there a definitive article on the subject?
>
> I apologize to the group for using a Micro$oft product (such as MSN
> Messenger)...
>
> TIA.
>
> Lavie
It depends on how your firewall is set up. Are you just blocking/allowing
ports, or is this a stateful machine thing?
MSN Messenger logs in over 443 (http), and 1863. It uses 6891-6900 port
range for messaging. Also, for video conferencing, I believe it needs
access to random dynamic (1024-65535) ports via udp.
Also, please don't call them Micro$oft / Winblows, etc. It's unprofessional
coming from someone who chose an alternative to Microsoft Windows.
--
I fell asleep reading a dull book, and I dreamt that I was reading on,
so I woke up from sheer boredom.
| |
| NeoSadist 2004-01-23, 7:48 pm |
| Meron Lavie wrote:
quote:
> I have a Linux IPtables firewall protecting my LAN. I am having all sorts
> of problems with MSN Messenger. In particular - getting LDAP lists of all
> people on line, etc. I also am having trouble with audio or video.
>
> Is there a definitive article on the subject?
>
> I apologize to the group for using a Micro$oft product (such as MSN
> Messenger)...
>
> TIA.
>
> Lavie
It depends on how your firewall is set up. Are you just blocking/allowing
ports, or is this a stateful machine thing?
MSN Messenger logs in over 443 (http), and 1863. It uses 6891-6900 port
range for messaging. Also, for video conferencing, I believe it needs
access to random dynamic (1024-65535) ports via udp.
Also, please don't call them Micro$oft / Winblows, etc. It's unprofessional
coming from someone who chose an alternative to Microsoft Windows.
--
I fell asleep reading a dull book, and I dreamt that I was reading on,
so I woke up from sheer boredom.
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