Re: ARCHI server for Linux ? (and FTP-Search Project)
On Mon, Apr 11, 2005 at 09:35:24PM +0200, Michelle Konzack wrote:
> Am 2005-04-11 20:13:21, schrieb Almut Behrens:
> > Does anyone happen to know of any viable, well-maintained alternatives?
>
> Let us create one ?
Well, I'd like to be able to _use_ such a service. But, personally,
I wouldn't rank its importance high enough to actually try setting it
up myself right now. IOW, such a project hasn't yet made it among the
Top 10 of things I'd like to get done for myself :) And, I'm already
lacking time to spend on those other projects...
Also, as I've already said, I feel this is slightly over my head -- if
you plan to do it decently (and only then it would really make sense).
In short, better not count on _me_ ... :)
>
> Oh, i will start small, bur do not know, how get I ftp-sources...
>
> Should I scan the Internet for port 21 ?
You mean brute force? Probably not the best idea. Even with IPv4
(leaving out the upcoming IPv6 for the moment[1]) there would still be
2^32 addresses to scan, which will take a while... (assuming an average
round trip time of 100ms (very optimistic estimate), it'd take at least
10 years!)
It's probably wiser to start from existing lists of FTP servers that
other people have already compiled. Finding those, and extracting
the relevant information, will likely not be possible without human
intervention, though. Alternatively - or in addition - one might
employ some kind of web spider to automatically extract hyperlinked
ftp:// URLs. These are just a few thoughts off the top of my head.
I have no idea how the formerly existing FTP-search providers had
solved that problem...
Anyway, good luck! :)
Almut
[1] with its theoretical IP-address density of about 670 quadrillion
addresses/mm^2 of the Earth's surface, you'd probably never get off
that piece of silicon wafer within your CPU - so to speak ;)
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