Home/ Questions/Q 7821309
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-02T07:36:06+00:00

I hope it is not too weird question. I’m running a web service on

  • 0

I hope it is not too weird question.
I’m running a web service on an IIS server which can be accessed either from internal network or from external (i.e Internet) by port forwarding.

External:
For example, if I connect to my server from the internet with http://my_public_domain_name than the firewall will forward port 80 to my server.

Internal:
Assuming my server has the ip 10.50.1.1 in the local network and my PC is in 10.60.1.1 (same itranet, different subnets) than I can access it by http://10.50.1.1.

When I get the request in the IIS (ASP.NET) I need to know whether the request was forwarded by the firewall or was it arrived internally.

Thanks.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    In a Servlet once, I wanted to have admin access from LAN only, so I took the internal IP range I was using, and created a simple rule for loggin in as admin that checked to see that my IP was in that range.

    In Java, I used HttpServletRequest.getRemoteAddr() and getRemoteHost().

    Looking in this page http://www.geekpedia.com/tutorial45_How-to-get-IP-address-of-client.html, it looks like the ASP equivalent is:

    Request.ServerVariables(“REMOTE_ADDR”)

    And something like this page would help you determine if it is a private (internal) IP range or not: https://en.wikipedia.org/wiki/Private_network (not sure if it is helpful for the IPv6 IPs)

    • 0