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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: the value of reverse address lookups?
On Wed, 31 Mar 2004, Douglas F. Calvert wrote: > I am interested in finding out what the motivation is for requiring > valid reverse address lookups before connecting to a daemon. I have > heard a number of different explanations, the majority of the responses > point to history/tradition and tcpwrappers. Is there a commonly accepted > justification for this practice? In my opinion it does not appear to > increase the validity of the connection. But I may be missing something > obvious. > Thanks in advance... Well, my understanding is that whilst its easy to get a domain name and some dns its usually quite difficult to put in a ptr record, these are usually controlled by the ISP. If they dont exist or dont match then the address is a dialup or hijacked or something not legitimate.. I think this is mainly an smtp antispam thing tho altho I see your point is for any connection is general, I guess the same appliers to hackers as to spammers.. ? Steve
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