I would like to know if there is some issue to avoid website copiers like httrack to copy a full site in local

i know that we can use useragent,

but is there some other tricks ?

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can we tell lighttpd, to not serve more that x pages in a period for the same IP ?
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can we automatically ban browser that leech invisible link (or any special link)

for instance, you have a

this link can't be view by browsers, if a bot get it... his ip is banned (if the ip doesn't belong to a trust list with google, msn and yahoo bots in it).

i did on an apache by appending a "deny from xxx" in a htaccess, but i don't think it's possible with lighttpd

perhaps it's more an iptables works ?

thanks in advance