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What is FTPS?

par HelpSystems • 07 Jan 2019

Whether you’re looking to upgrade from your current FTP file transfers or have new requirements from a trading partner or customer, you might be wondering what FTPS is. How does it work, you may ask. Does it differ from secure file transfer protocols like SFTP and AS2?Good questions. Let’s start by defining what FTPS is.

What is FTPS?

At its core, FTPS (FTP over SSL) is a secure file transfer protocol that allows you to connect securely with your trading partners, customers, and users. When file transfers are sent, they are exchanged using FTPS and can be authenticated through FTPS-supported methods like passwords, client certificates, and server certificates.

Anything Else I Should Know About FTPS?

Algorithms & Authentication

FTPS implements strong algorithms like AES and Triple DES to encrypt file transfers. For authentication when connecting to trading partner servers and vice versa, FTPS uses a combination of user IDs, passwords, and/or certificates to verify authenticity.

Compliance

If compliance is a concern in your organization, you can achieve various security  requirements with FTPS, including PCI DSS, HIPAA, HITECH, SOX, and state privacy laws.

TLS & Certificates

FTPS uses TLS (and SSL, though SSL is now considered insecure by PCI DSS and most industry standards) to encrypt server connections. X.509 certificates are used to authenticate these connections. They contain identifiable information like issuer name, subject name, subject public key details, and signature.

When using certificates, they’re considered trustworthy if signed by a known certificate authority (CA) or self-signed by a trading partner. Certificates signed by a CA are easy to validate using the chain of trust that is built into the standard. To validate self-signed certificates, you must have a copy of the trading partner’s public certificate in your trusted key store.

One Downside to FTPS

There is one downside to FTPS you should be aware of: FTPS can be difficult to connect through firewalls with high levels of security. FTPS uses multiple port numbers for implicit and explicit connection types, so every time a file transfer or directory listing request is made, another port will open. This can put your network at risk and open you up to vulnerabilities if you aren’t careful and alert or have strategies in place to avoid them.

Meet Your Requirements with Managed File Transfer

Choosing or using FTPS as your secure file transfer protocol is a smart, efficient way to exchange files in your organization. However, FTPS doesn’t operate in a void! In order to effectively implement all the features of FTPS and more, you’ll either need to find an FTPS tool or go with a centralized, all-in-one file transfer solution like managed file transfer.

An MFT solution can be used by organizations of all sizes for needs ranging from a few dozen file transfers a week to thousands or more exchanged a day. With strong encryption practices in place (e.g., OpenPGP or AS2), IT teams can be sure MFT will protect their data no matter the size, contents, or frequency of the file transfer.

See What’s Beyond FTP: Secure and Manage Your Data

Whether you need FTPS to meet trading partner requirements or you’re looking to update your FTP implementation to a more modern framework, you’re in this right place. Use this white paper, titled “Beyond FTP: Securing and Managing File Transfers,” to discover the options you have outside of scripts and legacy file transfer tools.

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