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Bob_10976's avatar
Bob_10976
Icon for Nimbostratus rankNimbostratus
Apr 16, 2009

iRule to Block request with Host Header

I'm needing some help with creating an iRule that will block any request that doesn't have a host header value.     For example if someone was to preform a GET / HTTP/1.1 on one our website...
application delivery
dev
devops
iRules
The_Bhattman's avatar
The_Bhattman
Icon for Nimbostratus rankNimbostratus
Apr 16, 2009
There are several ways to approach this

Here are some examples 

 
 when HTTP_REQUEST { 
   if { [HTTP::header "Host"] equals " " }  {  
       reject 
     } 
 }

or 

 
  
 class publicaddr { 
   "215.25.25.35" 
   "215.25.25.33" 
   "215.25.25.34" 
 } 
  
  
  
 when CLIENT_ACCEPTED { 
   if { [matchclass [IP::remote_addr] equals $::publicaddr] } {  
      reject 
      } 
 }

These are just examples.

Hope this helps

CB