Vulnerability Development mailing list archives

Re: ascii decoder


From: Lincoln Yeoh <lyeoh () POP JARING MY>
Date: Fri, 13 Oct 2000 00:57:05 +0800

At 11:30 AM 10/12/00 -0400, Jefferson Ogata wrote:
Slawek wrote:
rfc 1033: "DOMAIN ADMINISTRATORS OPERATIONS GUIDE"

NAMES
only the following characters are recommended for use in a host name
(besides the dot separator):
           "A-Z", "a-z", "0-9", dash and underscore

Anyway if somebody can confirm it's not allowed to use underscore in the
hostname, I can show it's easy to modify the decoder so it will not be
using
it anymore ;)

For the following discussion, please try to remember that "host names" and
"domain names" are two different things. Host names are sometimes encoded and

Also, theory != practice, same goes for RFC and implementations and for
finding vulnerabilities usually implementations count more than RFCs.

Often easier to break stuff where there are cracks ;).

Cheerio,
Link.


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