Date: Tue, 27 Feb 2001 17:04:34 -0500 From: "Joseph T. Klein" <jtk@titania.net> Cc: freebsd-stable@FreeBSD.ORG Subject: Re: Curious delay in telnet Message-ID: <3A9C2472.4040602@titania.net> References: <20010227225127.79002.qmail@web12504.mail.yahoo.com>
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If you do not have proper reverse DNS resolution the daemon pauses while waiting for the DNS to time out. This affects any service that attempts to resolve the IP address using DNS. This is an incredibly common problem with a very simple solution. Tyler McGeorge wrote: > This problem, and a similar acting problem with FTPd, > used to plague me. I found that after I setup my BIND > name daemon, this issue was resolved. If you don't > really have a need for a BIND name daemon, I would > suggest setting it up with just your 127.0.0 network > and your ISP network and set the pointers. You could > also contact your ISP and offer to be a backup name > server, this would solve your problem, it shouldn't > cause them any problems, and you would also have > faster lookups for any data on your ISP's nameserver. > This is just a suggestion. I set up my DNS with a free > domain name from yi.org, where you can get > <something>.yi.org for free. There are many services > like this and it doesn't hurt. When I remote admin, I > don't have to type in the cumbersome IP address, I > just type in the domain. This is another idea. > > My FTPd problem also disappeared at the same time > after I set up my BIND name daemon. > --- David Malone <dwmalone@maths.tcd.ie> wrote: > >> On Tue, Feb 27, 2001 at 10:13:03AM -0700, Nate >> Williams wrote: >> >>>> When I first telnet from my FB4.1 system to my >>> >> FB4.1 system, it prints: >> >>>> Trying 192.168.168.42... >>>> Connected to fb42. >>>> Escape character is '^]'. >>>> >>>> It then waits quite a long while (about a >>> >> minute) before printing: >> >>>> FreeBSD/i386 (fb42.cfcl.com) (ttyp0) >>>> >>>> login: >>> >>> Try: >>> >>> 'telnet -N 192.168.168.42' >>> >>> -N Prevents IP address to name lookup >> >> when destination host is given >> >>> as an IP address. >>> >>> If it comes up very quickly, it's a DNS/lookup >> >> issue. >> >> I don't think that will help 'cos the delay looks >> like it is with >> the telnetd at the far end trying to look up the >> name, not the >> local telnet. Unfortunately telnetd doesn't seem to >> have an option >> corrisponding to -N. >> >> David. >> >> To Unsubscribe: send mail to majordomo@FreeBSD.org >> with "unsubscribe freebsd-stable" in the body of the >> message >> >> >> > > > > __________________________________________________ > Do You Yahoo!? > Get email at your own domain with Yahoo! Mail. > http://personal.mail.yahoo.com/ > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-stable" in the body of the message -- Joseph T. Klein +1 414 915 7489 Senior Network Engineer jtk@titania.net Adelphia Business Solutions joseph.klein@adelphiacom.com "... the true value of the Internet is its connectedness ..." -- John W. Stewart III To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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