From: Mike '/m' 

On Tue, 04 Jan 2005 09:20:26 GMT, John Beckett
 wrote:

>"Rich"  wrote in message news::
>>      On Windows 2000 and Windows XP UDP port 445 is opened but I don't
>> think it is used or don't know how if it is.   On Windows Server 2003
>> UDP port 445 is not open.  Look at
>> http://support.microsoft.com/default.aspx?scid=kb;en-us;832017 and
>> you'll see that TCP 445 is mentioned but UDP 445 is not.  The Windows
>> Firewall in Windows XP and Windows Server 2003 also associates TCP 445
>> only with SMB.
>
>I just ran
>netstat -ano | find ":445"
>on a Windows Server 2003.
>
>Output showed:
>  TCP    0.0.0.0:445     0.0.0.0:0        LISTENING       4
>  UDP    0.0.0.0:445     *:*                              4
>so it appears that 445/udp is in use (and by the same process as
>445/tcp, namely System).

On my W2K Pro, SP4:

C:\Documents and Settings\mm>netstat -an | find ":445"
  TCP    0.0.0.0:445            0.0.0.0:0              LISTENING
  TCP    127.0.0.1:445          127.0.0.1:1124         ESTABLISHED
  TCP    127.0.0.1:1124         127.0.0.1:445          ESTABLISHED
  UDP    0.0.0.0:445            *:*

--- BBBS/NT v4.01 Flag-5