Date: Tue, 19 Jun 2001 12:58:54 -0400 From: Dan Armstrong <dan@beanfield.com> To: Tony Wells <tony@camel.kdsi.net> Cc: freebsd-questions@freebsd.org Subject: Re: Urgent help with Reverse Lookups and FTPD Message-ID: <3B2F84CE.608E7F75@beanfield.com> References: <3B2F74D7.C057B32F@beanfield.com> <3B2F820B.4147E4E8@camel.kdsi.net>
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Well, we have almost 1000 stub-bridged Ethernet LANs each on it's own private subnet tunneled over an ATM network back to a router. The long and the short of it is that we just cannot possibly manage reverse info for the entire network. Dan. Tony Wells wrote: > Do you really need thousands of addresses for your customers? I'm > making an assumption , but if you're assigning addresses using DHCP, can > you limit the range of addresses assigned to a reasonable amount? If > you only have say, 100 modems/xdsl/isdn or whatever connections, you > don't need ~64,000 IP's available. > > I would try looking into limiting the addresses assigned, and then using > /etc/hosts or reverse dns to resolve the IP's. (Unless of course, you > really need all those IP's.) > > Dan Armstrong wrote: > > > > We are a small ISP, and just turned up a new webserver running Free4.3 > > > > Most of our customers live on private (192.168) addresses and I am > > getting slaughtered with phone calls that they cannot ftp into their > > sites, and it is because their ftp programs don't necessarily wait for > > Free's ftpd to timeout doing the reverse lookup, for an address that of > > course does not have any reverse information for it. If I add their > > IP to the /etc/hosts BOOM they get in instantly. These thousands of > > addresses are all dynamically assigned, so the hosts file fix is not > > possible on this scale. Is there a way I can get it to stop? HELP! > > > > Dan. > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-questions" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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