Date: Sat, 9 Mar 2002 10:36:19 -0800 (PST) From: Mikko Tyolajarvi <mikko@dynas.se> To: tdv94ped@cs.umu.se Cc: questions@freebsd.org Subject: Re: Reverse DNS timeouts before connection? Message-ID: <200203091836.g29IaJQ96457@mikko.rsa.com> References: <20020304105431.A36025@freeze.org> <3C8950BA.39FD1D78@cs.umu.se>
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In local.freebsd.questions you write: >Seems to be a common question here, those reverse DNS lookup >problems, and it has now happen to me too, so therefore I'm >hoping someone can help me out. All, I hope, info needed are >below: >I'm running FreeBSD 4.5 as a firewall, with pppoe (netgraph), >ipfw and natd. I have DynDNS which is everlund.homeip.net >with wildcard. >ed0 => tun0 => out to the internet. >ed1 = 192.168.0.1 and 192.168.0.2 => to my internal network. >Windows 2k, on my internal network, have IP 192.168.0.4. >/etc/rc.conf [... snip ...] >/etc/hosts > 127.0.0.1 localhost.everlund.homeip.net localhost > 192.168.0.1 fw.everlund.homeip.net fw server > 192.168.0.2 fw.everlund.homeip.net fw server >/etc/resolv.conf > domain everlund.homeip.net > nameserver 10.0.0.1 > nameserver 10.0.0.2 [...] >When doing a 'telnet 192.168.0.1' from Windows I get following >doing 'ps -U root | grep inetd' in FreeBSD: > 241 ?? S 0:00.05 inetd: wrapping [192.168.0.4] (inetd) >Then it takes about a minute before I can login. From the out- [...] Your freebsd box is trying to do a reverse lookup of the NT box (.4), and from what I see above, nothing is providing this information, so you have to wait for DNS to time out. To make sure, run "tcpdump" on your outgoing interface while connecting (and use "-n", as your reverse-dns is hosed :) The Q&D fix is to add it to /etc/hosts. $.02, /Mikko -- Mikko Työläjärvi_______________________________________mikko@rsasecurity.com RSA Security To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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