using CommerceBuilder.Essentials;
using System;
using System.Web;

namespace ExamplePlugin
{
    public class RestrictURLModule : IAbleHttpModule
    {        
        public void Initialize(HttpApplication context)
        {
            // register the BeginRequest and EndRequest handler
            context.BeginRequest += new EventHandler(Begin);
            context.EndRequest += new EventHandler(End);
        }
        
        public void Dispose()
        {
            // dispose
        }
        
        private void Begin(object sender, EventArgs e)
        {
            HttpApplication application = (HttpApplication)sender;
            if (application == null) return;
            HttpContext context = application.Context;

            // ignore requests from the admin directory 
            HttpRequest request = context.Request;
            string absolutePath = request.Url.AbsolutePath.ToLowerInvariant();
            if (absolutePath.Contains("/admin/"))
            {
                // add your ip restriction logic here
                // e.g
                if (request.UserHostAddress == "127.0.0.1")
                    return;
            }
        }
        
        private void End(object sender, EventArgs e)
        {
            
        }
    }
}

</ableHttpModules>

<add name="Restrict URL Module" type="{Default namespace}.RestrictURLModule, {Assembly Name}" enabled="True" />
  </ableHttpModules>