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This KB article lists them all<br />
<a href="http://www.microsoft.com/serviceproviders/resources/techrescolumnsactivedirectory.mspx" rel="ugc nofollow">http://www.microsoft.com/serviceproviders/resources/techrescolumnsactivedirectory.mspx</a><br />

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This KB article lists them all
http://www.microsoft.com/serviceproviders/resources/techrescolumnsactivedirectory.mspx [http://www.microsoft.com/serviceproviders/resources/techrescolumnsactivedirectory.mspx]


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The article covers ActiveDirectory and IPSec but which ports do I specifically to enable windows authentication to work. &nbsp;Is it just Keberos port 88?<br />
<br />
Thanks<br />
Sam
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The article covers ActiveDirectory and IPSec but which ports do I specifically to enable windows authentication to work.  Is it just Keberos port 88?

Thanks
Sam

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<div class="content wysiwyg-content">
Hi there<br />
<br />
I know that windows authentication requires more than one port to be open in a firewall between servers but can anyone tell me which ones?<br />
<br />
Many thanks<br />
Sam 
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Hi there

I know that windows authentication requires more than one port to be open in a firewall between servers but can anyone tell me which ones?

Many thanks
Sam 

Ports needed for windows authentication

Software firewalls, also known as host-based firewalls, provide a layer of software on one host that controls network traffic in and out of that single machine. Most operating systems now include firewall software, but many available software firewalls include central distribution, antivirus systems and disaster recovery.