=?Utf-8?B?UHV6emxlZA==?= < XXXX@XXXXX.COM > wrote
That depends largely on your configuration.
If you have Windows File Sharing enabled, then you will probably
have ports 135-138 and 446 open. If you have an FTP Server, then
port 21 may be opened. Get the freebie program "TCPView" which will
show which ports are opened and which processes own them: