OPERATIONAL DEFECT DATABASE
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On same cases, Microsoft Internet Explorer version 8 (IE8) might report the following error message: Unable to open the Internet site http://x.x.x.x/. Operation aborted This is happening only on specific IE8 instances; some other instances do not show the error. The error is displayed when the address includes a hash (#) at the end, and a Bot Defense challenge is used. When there are additional parameters after the hash, the error is not seen.
Page fails to load due to the Internet Explorer error.
-- IE8 is used by the end user. -- Bot Defense is enabled. -- Address includes a hash (#) at the end without any additional parameters after the hash.
Applying the following iRule should work around the problem. However, this is applicable only if the client-side application does not expect hash parameters. ===================== when BOTDEFENSE_ACTION { set cookies [HTTP::cookie names] set tscookie_flag "0" foreach aCookie $cookies { if { $aCookie matches_regex {^TS(?:[0-9a-fA-F]{6,12})(?:$|_[0-9]+$)} } { set tscookie_flag "1" } } log local0. "$cookies tscookie_flag $tscookie_flag" set ua [HTTP::header value User-Agent] if {[BOTDEFENSE::action] eq "redirect_challenge" && ( $ua contains "MSIE 6.0" || $ua contains "MSIE 7.0" || $ua contains "MSIE 8.0" )} { BOTDEFENSE::action allow } if {[BOTDEFENSE::action] eq "browser_challenge" && ( $ua contains "MSIE 6.0" || $ua contains "MSIE 7.0" || $ua contains "MSIE 8.0" ) && $tscookie_flag eq "0"} { BOTDEFENSE::action custom_response "<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 3.2//EN\"> <html> <head> <meta http-equiv=\"refresh\" content=\"0; url=[HTTP::uri]\"> </head> <body> </body> </html>" } } =====================
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