I am trying to block SIP scanner so i am trying to use following logic

only allow "My-UserAgent" and block rest but its throwing error, but

if i use  =~ regular expression which works! why negative match

doesn't work?



if($ua !~ "(My-UserAgent") {

                   xlog("L_INFO","On more scriptkiddie, coming from

$si, blocking");

                   exit;

                }





what could be wrong here?



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