what port or ports are used for File sharing in windows?

回答1

I've seen all of these..file sharing related

UDP-137, UDP-138, TCP-139,TCP-445

And possibly TCP port 135, though that may be something to do with something called "RPC" (source (archived)).

on an windows 7 machine all of those are listening. Some are related to NETBIOS so you can do start...\\compname

This site adds:

If the server has NBT enabled, it listens on UDP ports 137, 138, and on TCP ports 139, 445. If it has NBT disabled, it listens on TCP port 445 only.

And this site (archived) mentions:

"In Windows 2000/XP/2003, Microsoft added the possibility to run SMB directly over TCP/IP, without the extra layer of NetBT. For this they use TCP port 445. "

So in 2K,XP,2003...and I suppose Win 7,8, it is possible to run file sharing on only port 445 But you'd be doing start...\\ip rather than start..\\compname

回答2

If file transfer is via FTP - TCP/21, in case of SFTP - TCP/22

445埠

445埠是一個譭譽參半的埠，有了它我們可以在區域網中輕鬆訪問各種共享資料夾或共享印表機，但也正是因為有了它，黑客們才有了可乘之機，他們能通過該埠偷偷共享你的硬碟，甚至會在悄無聲息中將你的硬碟格式化掉。