I'm surprised the check-names option even works. I remember one version of BIND 9 I played with that logged a message that it didn't recognize that option. So I took it out. (I wish I could remember what version of BIND that was.) Now, when I look at BIND 9.3.4, I see that it is allowed. In searching the web, I've seen various things along the lines of "it was not in 9.2, but it is in 9.3" and "BIND 9 doesn't need it because it doesn't check host names by default". The DNS & BIND book (4th ed) doesn't mention it in the appendix (p 569, BIND 9 Configuration File Statements), but it does mention it for BIND 9 in chapter 4, p76-78.
So, does BIND 9 use the check-names option? Do I need to put it back in my named.conf file? Thanks! jwc -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Gregory Hicks Sent: Friday, September 12, 2008 4:18 PM To: bind-users@isc.org; [EMAIL PROTECTED] Subject: Re: check-names settings > Date: Fri, 12 Sep 2008 14:56:56 -0500 > From: Peter Laws <[EMAIL PROTECTED]> > > Leonard Mills wrote: > > check-names master ignore > > > > might well be what you're looking for. You lose name checking > > against the current standards :-). > > *That's* the question: what are the standards as BIND sees them? The > RFCs referenced in here and in the docs specify what's "official" (or > what was official years ago) but that's not necessarily the same as what BIND does: > > "The rules for legal hostnames / mail domains are derived from RFC 952 > and RFC 821 as modified by RFC 1123." (from BIND docs) > > > OK, so just what is derived? Did they take the rules verbatim? Or do > they allow some and not others? SRV records *require* the underbar, > but they aren't mentioned in any of the RFCs above or any posted here today ... Well, you're allowed to have an "_" in a DOMAIN name but not in a HOST name. And RFC 2782 covers SRV RRs as used in DNS... (RFC 2782 is available http://www.faqs.org/rfcs/rfc2782.html and http://www.ietf.org/rfc/rfc2782.txt ) > So the question stands - what do I lose if I choose "check-names slave > ignore"? > > > -- > Peter Laws / N5UWY > National Weather Center / Network Operations Center University of > Oklahoma Information Technology [EMAIL PROTECTED] > ---------------------------------------------------------------------- > - Feedback? Contact my director, Craig Cochell, [EMAIL PROTECTED] Thank > you! > ------------------------------------------------------------------- Gregory Hicks | Principal Systems Engineer Cadence Design Systems | Direct: 408.576.3609 2655 Seely Ave M/S 9A1 San Jose, CA 95134 I am perfectly capable of learning from my mistakes. I will surely learn a great deal today. "A democracy is a sheep and two wolves deciding on what to have for lunch. Freedom is a well armed sheep contesting the results of the decision." "The best we can hope for concerning the people at large is that they be properly armed." --Alexander Hamilton
