The Internet Archive discovers and captures web pages through many different web crawls.
At any given time several distinct crawls are running, some for months, and some every day or longer.
View the web archive through the Wayback Machine.
The Wayback Machine - https://web.archive.org/web/20170420100450/http://unixguide.net/compaq/faq/Network1.shtml
Why doesn't FTP work to an XYZ system?
Digital UNIX uses the IP type-of-service option (TOS) by default. This
confuses some systems (reportedly Macintoshes). To turn off the
option for ftp, create a file /etc/iptos with the following entries: