RE: Performance Issues - PTR Records

[Barry Shein <bzs () world std com>]

> As a web host, we frequently find customers who have
> added Apache rules to their ecommerce sites to block
> undesirable traffic, such as credit card scammers, etc.
> Not knowing any better, they often do this by just
> blocking anything that ends in .in to block Indonesia
> for example.  Well, once you choose to block by 
> resolved name, now that site has to do a dns lookup
> for every incoming request to see if it resolves to a
> name that should be blocked.

Another practical problem with this approach is that .IN is India but
hey, at least it blocks something :-)

-- 
        -Barry Shein, that'd be .ID for Indonesia

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