System requirements for NAB Direct Link

NAB Direct Link works with your nominated Secure File Transfer Protocol (SFTP) client software to transfer files to and from NAB using IP address and Secure Socket Shell (SSH) authentication as well as Pretty Good Privacy (PGP) encryption.

Your business will need to meet these minimum requirements to connect to NAB Direct Link.

SFTP client software

Your SFTP client will need to establish connection via a port to the NAB hosts. 

SSH keys (public and private) 

• Cipher should be AES 256 or higher.
• RSA key size should be 4096 or higher.
• MAC should be SHA2.

PGP keys (public and private)

• Cipher should be AES 256 or higher.
• RSA key size should be 4096 or higher.
• MAC should be SHA2.
• Expiry date must be two years or less.

IP addresses

• Static IP addresses are required for allowlisting.
• Up to 20 IP address listings are available which can be comprised of individual, ranges, or a combination.
• A range cannot exceed /28 subnet (16 usable IP address in one range).
• For cloud-based packages, static IPs from the internet gateway exit point is required.

Note:

NAB Direct Link has two environments, Staging and Production:

• Each SSH and PGP key fingerprint must be unique, and the same key cannot be used in both Staging and Production.
• We recommend using unique IP addresses and avoid using the same IP addresses across Staging and Production.

NAB Direct Link supports both Windows and UNIX based SFTP Clients. 

File requirements

Files transferred to NAB must be in the ASCII Armor format. Payment files must meet NAB's documented file format specifications.