In article <zNtBe.3634$WA4.959@trndny04>, DLipman~nospam~@Verizon.Net
says...
> From: "Louise" <none@nospam.com>
>
>
> | Thanks.
> |
> | Could you tell me what these ports are sometimes used for (other than
> | "bad" things)?
> |
> | I just want to be sure I'm not blocking something I use and want.
> |
> | Louise
>
> Sure...
>
> Port 135 -- Remote Procedure Call (RPC) and Location Service (loc-srv) -- used by the MS
> Networking for various functionalities.
>
> Port 136 -- nothing uses this port and it is easier to exclude the range, inclusive of this
> port, than to enter the exact ports.
>
> Ports 137, 138 and 139 -- NetBIOS over IP, the main component of MS Networking to access
> File and Print Shares.
>
> Port 445 -- Microsoft-DS, Used for Server Message Blocks and other MS Networking constructs
> on Win2K, WinXP and Win2003 Server.
>
> None of these ports are used for normal Internet access. They are used on the Local Area
> Network (LAN) to share data between computeers but are not (annd should not be open to) the
> Internet or the Wide Area Network (WAN).
>
> By putting those plocks in hackers and Internet worms won't enter the LAN and no MS
> Networking can leak out onto the WAN. A simple but effective protection.
>
>
>
>
Thanks.

Louise