A FreeBSD server that is converted in a MS 2003 Server... and viceversa

[DrD <netdruid () ciudad com ar>]

Hi all...  I have a problem that I can't understand... lets see if you guys 
can help me with it.
I have access to a FreeBSD server, I accessed and look a little. The problem 
is when sometimes I have not access anymore, and its because the server is 
not a FreeBSD, is a MS 2003 Server... :( 
I mean, the server looks not to be the same, and the user/pass that I got 
before, dont work anymore. And then nmap tells that is a FreeBSD server, and 
I can access like before. But then I can't access, and nmap tells that is a 
MS 2003 Server.
This server is aparently a hosting server, I saw many webpages in there... and 
I supose it has static IP. But this problem happening many times already.
Anyone can tell me why is happening that? is this a extrange technique of 
security? I mean... is more easy patch the server, is full of holes... :)
Anyway... sorry but my english is very bad. Thanks a lot.

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