[squid-users] Proxy blocks underscore in hostname - DNS RFC2181 says underscore now valid, no?

I just got an email from one of my users complaining that when using the
Proxy he can't reach http://subscription_services.cmp.com but if he disables
the proxy it works.

My reply to him was:
"Underscore in a hostname used to violate the DNS RFCs. The Proxy was just
following the RFC.

http://www.squid-cache.org/Doc/FAQ/FAQ-11.html#ss11.8

http://www.acmebw.com/askmrdns/archive.php?category=81&question=604

The most recent DNS RFC 2181 is somewhat vague on what may be allowed, but
basically any “binary string” is considered valid now, even though not all
applications have implemented this:

http://www.lucent.com/livelink/0900940380004a18_White_paper.pdf (search on
underscore).
"

Can I get some feedback from the Squid folks? Is underscore (or any binary
string) not valid now for DNS hostnames per RFC 2181? If so, can this
change be made in the default compile of Squid? (I'm aware of the flag to
compile and disable this check)?

Jason Roysdon, CCDP/CCNP:Security, MCSE, CNA, Network+, A+
Public email : jroysdon@hotmail.com
Homepage : http://jason.roysdon.net/

PS: Don't use a subject like that looks like spam, as your message will end
up in my junk filter and never be read.

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Received on Thu Aug 22 2002 - 14:00:11 MDT