Have an I-Rule from an old 9.X platform that is not working on 11.4.1 Causing connecteion reset errors. Any idea's ??/

when RULE_INIT { set sec_http_methods [list "CONNECT" "DELETE" "DEBUG" "TRACE"]

Create a list of the response headers to preserve. This needs to be tailored to the application! set ::headers_to_hide [list "Server" "X-Powered-By" "X-AspNet-Version" "refresh" "Content-Location" ]

set sec_http_versions [list "1.0" "1.1" ] }

when HTTP_REQUEST {

             block unknown HTTP versions
if { ! [class match [HTTP::version] equals $::sec_http_versions ] } { 
                log local0. [concat "Invalid HTTP version: " [HTTP::version] [HTTP::uri]]
        reject 
            }



             block unwanted HTTP commands
            if { [class match [HTTP::method] equals $::sec_http_methods] } {
                             log local0. [concat "Invalid HTTP method : " [HTTP::method] [HTTP::uri]]
                            reject
            }




             block large POST data over 100MB (Increased to 200MB for iRebal Files in WCF 2_7_13)
            if { [HTTP::method] equals "POST" } {     
                            if { [expr [HTTP::header "Content-Length"] > 209700000] } {       
                             log local0. [concat "Invalid HTTP POST Length: " [HTTP::header "Content-Length"] [HTTP::uri]]
                            reject    

                            }  
            }

             block large QueryStrings
            [HTTP::query]

             block path traversal
            set file [regexp -inline {filename=(.+)} [HTTP::uri] ] 
            if { ($file starts_with "/") or ($file starts_with "../") } { 
            log local0. [concat "Invalid Path Traversal: " file [HTTP::uri]]
                            reject    
            } 


             block unwanted extensions
            switch -glob [string tolower [HTTP::uri]] {
                            *_vti_bin* -
                            */msi* -
                            *authuser* -
                            *.bas* -
              *.bs* -
                            *.bat* -
                            *.cfm* -
                            *.cgi* -
                            *cgi*bin* -
                            *.cmd* -
                            *.dat* -
                            *.dbm* -
                            *.dll* -
                            *__dopostback* -
                            *htaccess* -
                            *.htc* -
                            *.htr* -
                            *.ida* -
                            *.idc* -
                            *.idq* -
                            *.idx* -
                            *.inc* -
                            *.ini* -
                            *.java* -
                            *.jsp* -
                            *.mdb* -
              *.mov* -
                            *.nasl* -
                            *.nsf* -
                            *passwd* -
                            *pwds* -
                            *.php* -
                            *.php3* -
                            *.php4* -
                            *.pl* -
                            *.print* -
                            *readme* -
                            *.sql* -
                            *.stm* -
              *.tpl* {
                log local0. "Invalid Extension : [HTTP::uri]"
                            reject;
                                            set error_page "Website Notice:
You have attempted to access a resource that has been been blacklisted from our servers.   If you are using the Secure Exchange application or the Document Vault, please change the name of the resource and/or the file extension."
                                            HTTP::respond 404 content $error_page  
            }

}

}

Seeing the following in the logs of the LTM...Fri May 9 13:37:58 CDT 2014 err DMZ-MD-LTM01 tmm[9898] 01220001 TCL error: /Common/security_helper - Could not find class 1.0 1.1 (line 2) invoked from within "class match [HTTP::version] equals $::sec_http_versions "