RFC4255 - Using DNS to Securely Publish Secure Shell (SSH) Key Fingerprints.RFC4254 - The Secure Shell (SSH) Connection Protocol.RFC4253 - The Secure Shell (SSH) Transport Layer Protocol.RFC4252 - The Secure Shell (SSH) Authentication Protocol.RFC4251 - The Secure Shell(SSH) Protocol Architecture.RFC4250 - The Secure Shell (SSH) Protocol Assigned Numbers.Client Side - Allow outbound connections to port 22.Server Side- Allow inbound connections on port 22.Since SFTP protect data in motion only, the data at rest is in still in unencrypted form and vulnerable to data theft.May end up using out dated encryption such as Blowfish, DES etc.Sftp could be prone to brute force attack if password are not complex enough.The communication is binary and can't be logged "as is" for human reading.SSH keys are not easy to manage and validate.SSH key pairs must be generated beforehand.Note: Don't confuse SFTP with FTP over SSH SFTP can also help meet file transfer-related needs for PCI DSS, HIPAA, SOX, and more.Offers several ways to authenticate a connection using UserID/Password, SSH Keys or combination of both.Authenticates both the server and the user, preventing unauthorized access to data stream.It protects the confidentiality and integrity of the data using encryption and cryptographic hash functions.SFTP also protects against password sniffing and man-in-the-middle attacks.In layman's language this is Secure file Transfer Protocol designed by IEEE as an extension to SSH (Secure Shell protocol), providing high level security using AES, 3DES and other algorithm to encrypt all data that flows between systems.Server Side- Allow inbound connections on port 22.Ĭlient Side - Allow outbound connections to port 22. Difficult to maintain a inventory and have an operational control over such port forwarding throughout the organization.Port forwarding itself pose a risk that any data could be tunnelled thru SSH without getting monitored or alerted.A user with little hacking skill can sniff the traffic and steal any data sent over data channel.Since the data channel is still outside of SSH tunnel the data is still sent in unencrypted form.Utilizes port forwarding capabilities of SSH to tunnel the FTP session.It is FTP tunneled through an SSH connection.2585 Internet X.509 Public Key Infrastructure Operational Protocols: FTP and HTTP.People sharing these scripts are also sharing user credentials.FTP users run the risk of compromising login information when trying to automate the file transfer process by storing the credential in clear text.Does not provide the level of auditing that organizations need to document compliance with data security regulations.UserID and Password are sent in clear text hence vulnerable to password sniffing attack. Data in motion is not encrypted hence vulnerable to data theft thru man-in-the-middle attacks using arp poisoning.The FTP protocol uses two separate channels: FTP is an application layer client/server protocol used to transfer files between computer over a TCP/IP network
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