Q

What keeps unauthorized users from accessing my IP address/Internet?

Our network security expert explains how to keep unauthorized users from accessing your router's IP address for Internet access in this advice explaining how proxy servers can solve client control issues.

I have a Pentium 4 desktop PC on which an email server program is running. We are connected to the Internet via a router. We have a Class C network.

Many times we have found users who are not authorized for Internet, use the router IP address as a gateway and access to the Internet. Normally, our practice is to change the node address of the router (for example, if originally it was 192.168.1.1, we change it to 192.168.1.200).

Now I want to change the IP addressing of the router and make it 192.168.10.1. However, when I do this, none of the authorized users can access the Internet since the class of the network of the router changes. How do I implement this change and have the authorized users access the internet?

Proxy is the solution to your problem. A proxy server sits between your clients and Internet allowing only authorized traffic to pass through it. Proxy lets you configure the clients that need the access to Internet, based on different parameters like IP-based or user-based and allows you to define the time range during which the Internet can be accessed by these authorized clients. There are many open source proxy solutions available that you can download and install for free.
This was first published in January 2009
This Content Component encountered an error

Pro+

Features

Enjoy the benefits of Pro+ membership, learn more and join.

Have a question for an expert?

Please add a title for your question

Get answers from a TechTarget expert on whatever's puzzling you.

You will be able to add details on the next page.

0 comments

Oldest 

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:

-ADS BY GOOGLE

SearchSDN

SearchEnterpriseWAN

SearchUnifiedCommunications

SearchMobileComputing

SearchDataCenter

SearchITChannel

Close