FTP vs SFTP

by Sandeep Kumar | Oct 9, 2018 | Data Security, Encryption

and moves the file in the secure channel created by SSH. Therefore, the files can be transferred securely using SFTP.

FTP

SFTP

Transfers the data in an unencrypted manner which means it sends the data in plain text.
FTP uses TCP/IP protocol.
FTP does not provide a secure channel to transfer files between hosts.
FTP establishes a control connection on TCP port 21.
FTP is accessible anonymously, and in most cases is not encrypted.

Transfers the data by encrypting the files and passwords using AES and Triple DES.
SFTP protocol uses the SSH protocol.
SFTP utilizes a secure channel for transferring the files between the hosts.
SFTP transfers the file under the connection established by SSH protocol i.e., port 22 between client and server.
Implemented in the SFTP client component and in the SFTP server component.
SFTP protocol is encrypted, and it makes the control of traffic ineffective when using the traditional proxies.

Convenience in managing firewalls

The design of the FTP protocol uses one channel on port 21 for sending commands and receiving acknowledgments while FTP needs to open other channels dynamically to transfer files. Even though the client and server software will negotiate those channel automatically, this imposes an issue for client-side firewalls as a large number of ports need to be open to the server’s IP address for the protocol to operate via the firewall unabated.

Compared to FTP, SFTP is more friendly to today’s client-side firewalls because it only requires a single port 22 to be open for sending controls and for sending or receiving data files.

Therefore, FTP and SFTP are technically equally secure from an encryption standpoint. But SFTP is a better choice for firewall configurations simply.

Security

FTP has been around for almost half a century, and hence it predates many of the cybersecurity measures which have become commonplace in recent years. It means that standard FTP file transfers are not encrypted. Both your credentials and your files are transferred in plain text, making this option susceptible to harmful cyber threats.

FTP can be accessed anonymously which means that the user may log in to this server with an anonymous account when given a prompt for a username and password. In most of the cases, a user without a direct account with the host computer will be prompted to use his or her email address instead of a password. However, no virtual verification process takes place once that information is supplied.

As mentioned by Blogs like VPNcop SFTP connections are authenticated using the SSH keys, which offer another layer of security and ensure that information doesn’t fall into the wrong hands. SFTP protocol has a varying and wide range of operation which is accessible on remote files.

Some of its more notable features include resuming interrupted transfers, remote file removal, and directory listings. When compared with the other protocols SFTP is more fluid as a protocol and is more platform-independent. Hence, the SFTP is available on a wide range of platforms.

Encryption

The main difference between FTP and SFTP is encryption. It is the fact that when files are sent and received using …

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