Network Security Protocols Questions
Secure File Transfer Protocol (SFTP) is a network protocol that provides a secure and encrypted method for transferring files over a network. It is designed to ensure the confidentiality, integrity, and authenticity of the transferred data.
SFTP uses a combination of Secure Shell (SSH) protocol and FTP (File Transfer Protocol) to establish a secure connection between the client and the server. This secure connection is achieved through the use of encryption algorithms, such as AES (Advanced Encryption Standard), to protect the data in transit from unauthorized access or interception.
The concept of SFTP involves the following key elements:
1. Authentication: SFTP requires both the client and the server to authenticate each other before establishing a connection. This ensures that only authorized users can access the server and transfer files.
2. Encryption: SFTP encrypts the data being transferred, making it unreadable to anyone who intercepts it. This prevents unauthorized users from accessing or tampering with the data during transit.
3. Data Integrity: SFTP uses cryptographic hash functions to verify the integrity of the transferred data. This ensures that the data remains unchanged during the transfer and detects any unauthorized modifications.
4. Portability: SFTP is platform-independent, meaning it can be used on various operating systems and devices. This makes it a versatile and widely adopted protocol for secure file transfers.
Overall, SFTP provides a secure and reliable method for transferring files over a network, protecting the confidentiality, integrity, and authenticity of the data being transferred.