--- Rob Nagler <[EMAIL PROTECTED]> wrote: > J,L writes: > > i think to fool a server to fetch page,d/l files > etc, > > cookie, refer,user-agent,authentication are the > ones > > related most. or all? > > There is never a "most" in this case. Here are some > problems I've > run into besides the one you mentioned: > > 1) Mismatched SSL versions > 2) Expecting Referer: to be something specific > 3) Unexpected Authorization: (fixed in a patch to > this list) > 4) Not retrieving JavaScript or other included files > (usually, to set cookies, but you never know). > 5) Requests received too fast > > As somebody else on this list already mentioned, you > have to do > exactly what the browser does if you're having > problems. The reasons > for this are usually poorly implemented software on > the server side > and not a security scheme. > > Happy scraping, > Rob > >
The new trick,well been around for quite a while, is to generate a image with random number on it,submiters have to submit the form with a the corresponding number. This tech used a lot on search engine form. I don't think anyone can get around with it. But this probably has nothing to do with LWP.. James __________________________________________________ Do you Yahoo!? Faith Hill - Exclusive Performances, Videos & More http://faith.yahoo.com
