HTTP Protocol Validation

• Only accept right FDQN request, otherwise deny or redirect it to portect your real server.
• Useful to clean HTTP (port 80) robot scan.
• Deny not acceptable HTTP method
• Deny incorrect HTTP version

• Service Type: HTTP / HTTPS

when HTTP_REQUEST {
  # Check method first.
  if { [HTTP::method] eq "GET" || [HTTP::method] == "POST" } {
    # do nothing
  } else {
    HTTP::redirect "https://www.google.com"
  }

  # Check HTTP version.
  if { [HTTP::version] eq "1.0" or [HTTP::version] == "1.1" } {
    # do nothing
  } else {
    HTTP::redirect "https://www.google.com"
  }  

  # Check FQDN.
  if { [string tolower [HTTP::host]] contains "www.jal.tw"} {
    # use specify service group
    pool www_service_group
  } elseif { [string tolower [HTTP::host]] ends_with "jal.tw"} {
    # do nothing use default service group.
  } else {
    HTTP::redirect "https://www.google.com"
  }
}