Glossary / E / External file transfer

External file transfer

External file transfer is how data moves from inside an organization to an outside receiver. This receiver could be a vendor, a customer, a partner or another recipient. This data often contains private or regulated data such as personally identifiable information or financial data, and it must be protected while in transit.

Many organizations use managed file transfer (MFT) or file transfer protocol (FTP) systems to support external file transfer. These systems rely on secure protocols like SFTP, FTPS and HTTPS. These tools lock the data, check who is sending it and make sure nothing is altered along the way.

External file transfer methods

External file transfers can be accomplished using a number of methods depending on your organization’s needs for security, speed and compliance. Some situations call for strict rules and high-level protection. Others may focus more on fast file delivery or system performance. These requirements will guide an organization’s selection of the proper transfer protocol.

Each external file transfer method offers its own set of features. Some give you more control over who can send or receive files. Others include built-in encryption to keep data safe. Many can be automated to reduce manual work and lower the chance of mistakes.

Some common external file transfer protocols are:

  • AS2: Transmits data securely over HTTP/S with digital signatures and encryption
  • FTPS: Adds TLS encryption to traditional FTP for encrypted sessions
  • HTTPS: Uses SSL/TLS to protect file transfers through web-based applications
  • SFTP: Encrypts both commands and data for secure transfers over SSH

These methods support reliable, auditable file transfers between external entities and internal systems.

The importance of using secure file transfer protocols for external file transfer

Secure file transfer protocols help protect sensitive data that’s shared with external parties by providing encryption, authentication and integrity checks during transmission. Doing so ensures that even if data is sent to an insecure location or across an insecure network, it will be unreadable without the appropriate decryption key. 

Using these protocols helps reduce exposure to data interception or tampering during external exchanges.

External file transfer FAQs

How do you access an external FTP server?

First, you need an FTP client. The server owner gives you a username and password. Some people use apps. Others use command lines. It depends on what the server allows.

Open the client. Type in the address and port. Add your name and password. Pick SFTP or FTPS if the server uses encryption. When you’re in, you’ll see some files. Your user controls will determine what you can do with them.

<Mitigate the risks of using file transfer protocols>

What does FTP mean?

FTP is short for file transfer protocol. It was one of the first ways to move files between computers on a network. It works by connecting a client to a server over TCP/IP. Users can upload, download or manage files through a login system.

There are different forms of FTP. The basic type sends everything in plain text. FTPS and SFTP add encryption to protect data. Most people now avoid plain FTP. Instead, they use FTPS or SFTP for secure file sharing in business and technical settings.

<Does FTP have a future?>

What are the three types of FTP?

The three main types of FTP are: 

FTPS: FTPS adds encryption through SSL or TLS and allows secure transfers over the FTP protocol.
SFTP. SFTP is entirely different from FTP and FTPS. It runs over SSH, encrypts commands and data and operates as a single-channel protocol. 
Standard FTP: Standard FTP does not encrypt file traffic, which leaves your data vulnerable to interception. It is deprecated and should not be used.

Each type of FTP has different use cases depending on your security requirements and system compatibility.

<Every file transfer protocol: Explained>

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