Exhange 2003

[deniz () edizayn com tr (Deniz CEVIK)]

Hi All,

While we are testing our customer network, we faced with strange problem. We
are testing exchange 2003 server externally. When we controlled open
services with port scan, I saw that only two ports (25 and 100) are shown as
open. Before I run the portscan, I have controlled the server with "nbtstat"
command of windows. It returned error messages as below.

nbtstat -A EXCH_IP

Local Area Connection:
Node IpAddress: [MY_MACHINE] Scope Id: []

    Host not found.

After the port scan is finished, in order to see the banner information of
mail server, I opened the connection to port 25 using telnet command (telnet
EXCH_IP 25). Same time when I run "nbtstat -A" command from another window
by mistake and I saw that below output.

nbtstat -A EXCH_IP

Local Area Connection:
Node IpAddress: [MY_MACHINE] Scope Id: []

           NetBIOS Remote Machine Name Table

       Name               Type         Status
    ---------------------------------------------
    HADXM           <1F>  UNIQUE      Registered
    HADXM           <00>  UNIQUE      Registered
    HADXM           <20>  UNIQUE      Registered
    EXCHANGE        <00>  GROUP       Registered
    EXCHANGE        <1C>  GROUP       Registered
    EXCHANGE        <1B>  UNIQUE      Registered
    EXCHANGE        <1E>  GROUP       Registered
    HADXM           <03>  UNIQUE      Registered
    ADMINISTRATOR   <03>  UNIQUE      Registered
    EXCHANGE        <1D>  UNIQUE      Registered
    ..__MSBROWSE__. <01>  GROUP       Registered
    HADXM           <6A>  UNIQUE      Registered
    HADXM           <87>  UNIQUE      Registered

    MAC Address = MAC_ADDRESS_OF_EXCHANGE

If there isn't any connection to open port of the server you can't see this
nbtstat outputs.

Has any body faced with same situations before?

BR


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