Hypertext transfer protocol secure (HTTPS) is a secure extension of HTTP that encrypts communication between a client and server (including authentication credentials, file contents and session data) using transport layer security (TLS). Doing so protects the confidentiality and integrity of data transmitted in a web browser-based session, where data packets may travel across multiple networks.
Within secure file transfer environments, HTTPS enables users to access and modify files through a standard web browser without requiring a dedicated file transfer protocol (FTP) client. It is an ideal solution for ad hoc or public file transfers in which an internal user seeks to provide external access to a specific file or directory for a period of time, or for organizations that allow public uploads and downloads. HTTPS transfers can be set up with the same permissions, contro,l audit logging and encryption requirements as other secure file transfer protocols as well.
Key features of HTTPS
HTTPS offers key features that make it ideal for secure file transfer in managed settings. These features protect confidentiality, preserve integrity and enforce access control during web-based data exchange. Other features include that it:
- Encrypts every packet with TLS to guard credentials and file contents while the data travels
- Operates via browser uploads and downloads, so users don’t have to install a separate FTP client
- Uses certificate validation to confirm the server’s identity with optional client proof for mutual trust
HTTPS transfers can be set up to follow the same access controls, logging and encryption rules as other secure protocols like SFTP. These security features help organizations meet regulatory and compliance needs.
Because of this, HTTPS is a reliable choice for secure file exchange over the web. It fits well into managed file transfer (MFT) systems used in enterprise settings.
Why HTTPS is important
Data packets travel through many networks when sent between a browser and a server. Without encryption, anyone on those networks can see the data. HTTPS adds protection by securing the path between both sides. This helps prevent stolen credentials or changes to the data.
In addition, HTTPS:
- Enables certificate-based trust models between clients and servers so that session partners can verify that they are exchanging data with the machine they believe they are
- Encrypts file transfer sessions to meet security requirements
- Reduces the chance of man-in-the-middle attacks by encrypting all session data
- Provides a secure file transfer experience without requiring extra software
- Works well in environments where firewall restrictions limit other protocols
File transfers using HTTPS
HTTPS is typically used for several forms of secure file transfer:
- Ad hoc or public file transfers, where an internal user shares a specific file or directory externally
- Public file/directory access where an organization must provide easy file and directory manipulation to large numbers of users (such as a law firm that requests digital document copies)
- Web browsing sessions in which the client and server exchange multiple forms of media (e.g., text, images, HTML code, videos and more)
HTTPS FAQs
HTTP is not secure because it moves data across networks in clear text. Attackers with access to any of the networks or machines the data travels over may lift usernames, passwords or entire files from HTTP transfers in an attack known as man-in-the-middle.
HTTP also does not provide native proof of identity, meaning clients and servers cannot be sure of each other’s identity beyond any provided credentials.
HTTPS relies on TLS for encryption. Because a TLS connection is established before any session data is transmitted, HTTPS shields every byte that moves between the client and server.
The exchange starts with a handshake, during which the TLS encryption level is established. Afterward, the server sends a digital certificate, which the client checks against its trusted authorities. A valid match creates a session cipher key between the parties, which is used to encrypt all later traffic.
Open a browser and enter https://cerberusftp.com. A padlock will appear next to your URL that indicates your session is using HTTPS.
While HTTP sends session data in clear text, HTTPS hides traffic with encryption by using TLS. HTTPS transfers also present a server certificate to a client so that the browser can verify they are communicating with the expected server.