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FTP uses separate ports for data and control.
port 20 for data
port 20 for control connection.
Inorder to avoid the extra headers and details for each and every packets which will consume the bandwidth. A separate port is used for data connection.
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What ports does Windows Server 2008 use for FTP?
If using standard FTP protocol then ports 20 and 21 would be used.
What protocols use ports 80 25 and 20?
80 is HTTP, 25 is SMTP and 20/21 are used for FTP.
Can a Server be both an FTP Server and a Web Server?
Yes, we can host multiple web sites on single web server and only one FTP server per IP address. They just use different ports.
What ports need to be open for the client to use the FTP client software?
FTP is a TCP based service exclusively. There is no UDP component to FTP. FTP is an unusual service in that it utilizes two ports, a 'data' port and a 'command' port (also known as the control port). Traditionally these are port 21 for the command port and port 20 for the data port. The confusion begins however, when we find that depending on the mode, the data port is not always on port 20. In active mode FTP the client connects from a random unprivileged port (N > 1023) to the FTP server's command port, port 21. Then, the client starts listening to port N+1 and sends the FTP command PORT N+1 to the FTP server. The server will then connect back to the client's specified data port from its local data port, which is port 20. From the server-side firewall's standpoint, to support active mode FTP the following communication channels need to be opened: * FTP server's port 21 from anywhere (Client initiates connection) * FTP server's port 21 to ports > 1023 (Server responds to client's control port) * FTP server's port 20 to ports > 1023 (Server initiates data connection to client's data port) * FTP server's port 20 from ports > 1023 (Client sends ACKs to server's data port) In order to resolve the issue of the server initiating the connection to the client a different method for FTP connections was developed. This was known as passive mode, or PASV, after the command used by the client to tell the server it is in passive mode. In passive mode FTP the client initiates both connections to the server, solving the problem of firewalls filtering the incoming data port connection to the client from the server. When opening an FTP connection, the client opens two random unprivileged ports locally (N > 1023 and N+1). The first port contacts the server on port 21, but instead of then issuing a PORT command and allowing the server to connect back to its data port, the client will issue the PASV command. The result of this is that the server then opens a random unprivileged port (P > 1023) and sends the PORT P command back to the client. The client then initiates the connection from port N+1 to port P on the server to transfer data. From the server-side firewall's standpoint, to support passive mode FTP the following communication channels need to be opened: * FTP server's port 21 from anywhere (Client initiates connection) * FTP server's port 21 to ports > 1023 (Server responds to client's control port) * FTP server's ports > 1023 from anywhere (Client initiates data connection to random port specified by server) * FTP server's ports > 1023 to remote ports > 1023 (Server sends ACKs (and data) to client's data port)
What is the purpose of FTP websites?
FTP stands for file transfer protocol. Some sites use FTP as a way to transfer files from a computer to a web server. Some sites which offer music and movies use FTP for their downloads.
What is the advantages of FTP?
The biggest advantages to an ftp server is that you can a file folder of files and most website building programs use ftp
What port does ftp use?
Generally port 21 is for FTP 22 for FTP using SSH 990 FTP using SSL
What ports did the british use to invade the south?
The two ports the British captured a port in Savannah and Charles Town.
If you were a web developer how would you use an ftp?
I use ftp to copy/edit files on a remote server that hosts a website
Can Tumblr use a FTP client?
no
How do you use a FTP client on a WiFi network?
There is no difference with FTP as a client on either a wired or wireless network; you use it the same way.
What are the corresponding protocols and use for the port numbers 23 110 25 20?
23 is for telnet,25 is for SMTP,20 is for FTP and 110 is for POP3
