João Cardoso has made a replacement firmware. This is in active development as at Jun 2016 and is successful on rev B hardware with C close to completion.

The firmware can be flashed over the existing Dlink firmware or used in a 'reloaded' fashion, loading after Dlink firmware.

Project Home Page : http://sites.google.com/site/altfirmware/

Benefits include:

• Up-to-date Linux Kernel
• Alt-F has Samba and NFS; supports ext2/3/4, VFAT, NTFS and ISO9660 filesystems.
• RAID 0, 1, 5 (with external USB disk) and JBD
• Supports 2/3/4TB disks.
• Supports rsync, ftp, sftp, ftps, ssh, lpd, DNS and DHCP servers, DDNS, fan and leds control, clean power up and down… and more.

Alt-F also has a set of comprehensive administering web pages, you don't need to use the command line to configure it

• Extensive Web based administration
• Web based package management and configuration
• Precompiled packages for alt-f and ffp

Note: The blog page for this work is from 2008

Helge has instructions for creating a custom firmware. Helge reports that the firmware created via this process can be uploaded to the DNS-323 web interface! Apparently this eliminates the need for using a serial port to flash the 323…

Testers wanted :). If this works, we could start working on a community firmware to replace the wretched D-Link firmware?

http://blog.leschinsky.in.ua/2008/06/09/building-firmware-binary-image-d-link-dns-323/

http://blog.leschinsky.in.ua/tag/dns-323/

Some of the site is in Ukrainian, but it looks like all of the dns-323 stuff is in good english.