These devices are used by customers of Deutsche Telekom as ISDN-to-SIP gateways. Currently there doesn’t seem to be much public information about it, so I’ll make a start.

For those of you who operate DNS services using Daniel J. Bernstein’s famous djbdns, autoaxfr “lets you emulate the functionality of bind’s type slave zones with a masters list of IP addresses”.

Debian GNU/Linux contains a command line based FTP client, which has been enhanced to understand the AUTH SSL command. This is a good thing, but AUTH SSL has been superseded by AUTH TLS.