WCF Service Behavior Example: IPFilter - Allow/Deny Access by IP Address

<?xml version="1.0" encoding="utf-8" ?>
<!-- Example configuration -->
<configuration>
  <configSections>
    <section name="IPFilter" type="IPFilter.Configuration.IPFilterConfiguration,IPFilter"/>
  </configSections>
  
  <IPFilter>
    <HttpModule FilterName="Default" />
    <Filters>
      <add Name="Default" DefaultBehavior="Deny">
        <deny hosts="192.168.11.12,192.168.1.*" />
        <allow hosts="192.168.0.0/16" />
        <deny hosts="*" />
      </add>
      
      <!-- A filter than only allows traffic from local network -->
      <add Name="LocalOnly">
        <allow hosts="10.0.0.0/8,172.16.0.0/12,192.168.0.0/16,127.0.0.1/8" />
        <deny hosts="*" />
      </add>

      <!-- A filter than denies traffic from local network -->
      <add Name="DenyLocal">
        <deny hosts="10.0.0.0/8,172.16.0.0/12,192.168.0.0/16,127.0.0.1/8" />
        <allow hosts="*" />
      </add>

      <!-- A filter than only allows traffic from loopback -->
      <add Name="LoopbackOnly">
        <allow hosts="127.0.0.1/8" />
        <deny hosts="*" />
      </add>

      <!-- A filter than denies traffic from loopback -->
      <add Name="DenyLoopback">
        <deny hosts="127.0.0.1/8" />
        <allow hosts="*" />
      </add> 
    </Filters>
  </IPFilter>
</configuration>