Syncplify Developers Blog

Release notes and blog by the developers at Syncplify

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Syncplify Devs
November 24, 2023

Syncplify Server! v6.2.18 released

Importance of this update: NORMAL
What’s changed?
  • On new installs the setup process does not create an RSA host key anymore, upgrades and restores from backups will not remove your existing RSA keys though
  • The repairhttp command-line verb now uses better defaults for HTTPS/WebClient! configuration
  • Better HTTPS/WebClient! default values are also used now when creating a new Virtual Site
  • Fixed the list of host key algorithms returned to SSH/SFTP clients, now it won’t include algorithms for keys your server doesn’t have
  • Upgraded the compiler to the most recent version to capture several fixes and improvements in its standard library

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Syncplify Devs
November 20, 2023

This is why you should use RSA host keys carefully, or just stop using them altogether

An extremely interesting research paper published in 2023 by Keegan Ryan, Kaiwen He, George A. Sullivan, and Nadia Heninger, mathematically proves yet another weakness with RSA keys – often used as host keys by/for SSH/SFTP servers – and this time it has to do with the way they are generated.

Without delving into the math itself, which is not the purpose of this blog, we would like to take this occasion to advise our customers to use stronger keys, like ECDSA or Ed25519, instead of RSA for their host keys.

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Syncplify Devs
April 12, 2023

Syncplify Server! v6.0.28 released 🔥

Importance of this update: HOT-FIX
Fixed
  • Password validation during User creation is only applied for user profiles which password authentication is not delegated to a back-end LDAP server
  • User authentication via PKI (over SSH/SCP/SFTP) is now carried out correctly even when the user profile has multiple public-keys associated to it
  • Exporting the public part of an SSH Host Key now works as expected

Upgrading from v6.0.x is a simple and fairly automatic process: simply download the latest version from the official download page, and install it over the existing version, all of your settings and license will be kept.

If, instead, you’re upgrading from an older (v4/v5) version, you find the upgrade instructions in our knowledge base.

Thank you all for trusting our software with your secure file transfers!

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