Protocols

Difference between http and https

The most important difference between the two protocols is the SSL certificate.
In fact, HTTPS is basically an HTTP protocol with additional security.
The SSL certificate encrypts the information that users supply to the site.
But in addition to adding that extra layer of security, HTTPS is also secured via TLS (Transport Layer Security) protocol. TLS helps provide data integrity, which helps prevent the transfer of data from being modified or corrupted, and authentication, which proves to your users that they are communicating with the intended website.


SSL is the predecessor to TLS.

• FTP vs SFTP

While SFTP and FTP perform the same basic function – transferring files – there is one key difference. When it comes to security.

the “S” actually stands for SSH (secure shell) file transfer protocol. With SFTP, data is always encrypted when it’s transferred.

FTPS (FTP over SSL) is an encrypted version of FTP.

SFTP also offers public key authentication in lieu of password authentication. Public key authentication is far more secure. FTP and FTPS only offer password authentication.

SFTP provides two methods for authenticating connections. Like FTP, you can simply use a user ID and password. However, with SFTP these credentials are encrypted, giving it a major security advantage over FTP. The other authentication method you can use with SFTP is SSH keys. This involves first generating a SSH private key and public key.