IIS Log query

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Not sure if this is the correct group, but seeing as how it does occur on an
SBS box, I figure it's relevant.

Recently my server logs have shown entries like below:

2003-07-30 00:51:58 10.0.0.32 - 10.0.0.2 80 OPTIONS / - 200
Microsoft-WebDAV-MiniRedir/5.1.2600
2003-07-30 00:51:58 10.0.0.32 - 10.0.0.2 80 PROPFIND /sysvol - 404
Microsoft-WebDAV-MiniRedir/5.1.2600
2003-07-30 00:52:05 10.0.0.13 - 10.0.0.2 80 OPTIONS / - 200
Microsoft-WebDAV-MiniRedir/5.1.2600
2003-07-30 00:52:05 10.0.0.13 - 10.0.0.2 80 PROPFIND /sysvol - 404
Microsoft-WebDAV-MiniRedir/5.1.2600
2003-07-30 00:52:14 10.0.0.13 - 10.0.0.2 80 OPTIONS / - 200
Microsoft-WebDAV-MiniRedir/5.1.2600
2003-07-30 00:52:14 10.0.0.13 - 10.0.0.2 80 PROPFIND /NETLOGON - 404
Microsoft-WebDAV-MiniRedir/5.1.2600
2003-07-30 00:52:14 10.0.0.13 - 10.0.0.2 80 PROPFIND /users - 404
Microsoft-WebDAV-MiniRedir/5.1.2600
2003-07-30 00:52:19 10.0.0.13 - 10.0.0.2 80 PROPFIND /Clients - 404
Microsoft-WebDAV-MiniRedir/5.1.2600
2003-07-30 00:52:19 10.0.0.13 - 10.0.0.2 80 PROPFIND /clientapps5 - 404
Microsoft-WebDAV-MiniRedir/5.1.2600
2003-07-30 00:52:31 10.0.0.17 - 10.0.0.2 80 OPTIONS / - 200
Microsoft-WebDAV-MiniRedir/5.1.2600
2003-07-30 00:52:31 10.0.0.17 - 10.0.0.2 80 PROPFIND /NETLOGON - 404
Microsoft-WebDAV-MiniRedir/5.1.2600
2003-07-30 00:52:33 10.0.0.17 - 10.0.0.2 80 PROPFIND /Users - 404
Microsoft-WebDAV-MiniRedir/5.1.2600
2003-07-30 00:52:37 10.0.0.17 - 10.0.0.2 80 PROPFIND /Clients - 404
Microsoft-WebDAV-MiniRedir/5.1.2600
2003-07-30 00:52:37 10.0.0.17 - 10.0.0.2 80 PROPFIND /clientapps5 - 404
Microsoft-WebDAV-MiniRedir/5.1.2600

Can anybody give me some clue as to why the clients would be using port 80
for logon requests? I assume this is what the logs are showing.

Thanks

Darren
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