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- Newsgroups: comp.protocols.tcp-ip.ibmpc
- Path: sparky!uunet!cs.utexas.edu!sun-barr!ames!Mongo-Jr.Empirical.COM!karl
- From: karl@empirical.com (Karl Auerbach)
- Subject: Re: PC/TCP 2.1 copy protection
- Message-ID: <karl.24.716090190@empirical.com>
- Sender: usenet@news.arc.nasa.gov
- Organization: Empirical Tools and Technologies
- References: <1992Sep8.214208.41914@clinicom.com> <1992Sep9.203605.4298@murdoch.acc.Virginia.EDU> <417@asylum.UUCP>
- Distribution: usa
- Date: Thu, 10 Sep 1992 01:56:30 GMT
- Lines: 35
-
- I've been running the FTP 2.1 code with the serial number code for some
- months now.
-
- John Romkey's summary is generally correct. The serial number seems to be
- carried in ARP frames (in the unused part between the end of the true ARP
- packet and the end of the minimum size Ethernet frame.)
-
- When there is a clash of serial numbers, there is the good old Romkey chirp
- and a fairly non-intrusive error message. It only seems to appear
- occassionally and only at the DOS prompt. (I haven't seen it under Windows.)
-
- There is a special disk which has a serialized module. The numbers on the
- disk has to be entered into the pctcp.ini file. If the numbers are wrong
- the kernel won't load. If you just clone machines from a master machine
- like I tend to do, you only need to copy a:*.* c:\pctcp for the one special
- (360K) disk, not the entire set.
-
- I've found it pretty painless to set up and not particularly intrusive
- when a collision happens. [I was part of the 2.1 beta test so I had lots of
- copies with the same serial number for quite a while.]
-
- I just had to make adding the right serial number to the pctcp.ini file part
- of the ceremony of giving an IP address and name to a new machine.
-
- --karl--
-
- >Unless it's changed since my last understanding of it (which I doubt
- >but is possible), FTP Software's copy protection scheme will not
- >require you to have a specific diskette per machine, nor will it
- >generate any extra network traffic.
- >
- >Also, the serial number is
- >piggy-backed on ARP packets, not in special broadcasts, so it doesn't
- >cost you any extra traffic.
-
-