Solved

How to white-list internal only web access?  Block external web surfing and filter pages.

Posted on 2011-09-29
6
643 Views
Last Modified: 2012-05-12
We have a few machines running Win XP SP3 and Win 7 that we'd like to limit web surfing on.  
How can we best implement this?

REQUIREMENTS:

----------------------------------------------------------------------------------------------------------------------------------
Block Web:    We want to block all other external web-surfing.
Access Internal:   We need to make internally served pages available they are all on one domain.
GPO:     We'd like to apply any solution by policy applied to a single OU.
0
Comment
Question by:ServDeskKnows
6 Comments
 
LVL 2

Assisted Solution

by:GoatCreek
GoatCreek earned 100 total points
ID: 36814259
Set the proxy server to 127.0.0.1, bypass proxy for local adresses, add the local network to bypass the proxy server.
0
 

Author Comment

by:ServDeskKnows
ID: 36814271
GoatCreek: I can't use the local proxy.  

That's what we've been doing, but a Citrix client application isn't able to cope with that proxy setting.  I'm looking for an alternative to that exact setup.
0
 
LVL 8

Accepted Solution

by:
MarkieS earned 300 total points
ID: 36814447
Can you utilise something like PAC files or WPAD browser settings.

A PAC file or WPAD.dat like below can be used to direct and/or restrict Web browsing

function FindProxyForURL(url, host) {

// If URL has no dots in domain name, send direct.
      if (isPlainHostName(host))
            return "DIRECT";

// If URL matches, send direct.
      if (shExpMatch(url,"*domain123.com/folder/*") ||
          shExpMatch(url,"*domainXYZ.com:*/*"))                  
            return "DIRECT";


// If hostname matches, send direct.
      if (dnsDomainIs(host, "vpn.domain.com") ||
            dnsDomainIs(host, "abcdomain.com"))
            return "DIRECT";

// If hostname resolves to internal IP, send direct.
      var resolved_ip = dnsResolve(host);
      if (isInNet(resolved_ip, "10.0.0.0", "255.0.0.0") ||
            isInNet(resolved_ip, "172.16.0.0",  "255.240.0.0") ||
          isInNet(resolved_ip, "192.168.0.0", "255.255.0.0") ||
          isInNet(resolved_ip, "127.0.0.0", "255.255.255.0"))
            return "DIRECT";

// DEFAULT RULE: All other traffic, use below proxies, in fail-over order.
      return "PROXY PROXYSERVERNAME1:8080; PROXY PROXYSERVERNAME2:8080; DIRECT";

0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 
LVL 2

Assisted Solution

by:GoatCreek
GoatCreek earned 100 total points
ID: 36895578
You can set the proxy settings also by AD policy
0
 
LVL 29

Assisted Solution

by:pwindell
pwindell earned 100 total points
ID: 36986622
It is no where near as complex and it is being made here.

You just set the Firewall/Proxy to just not allow certain machines to the Internet.  That's it,...Done.

Internal browsing does not go through the proxy in the first pace,..so that is irrelevant.  The whole point of a LAT (Local Address Table) on a firewall/proxy is to define the interior LAN so that the Firewall/Proxy already ignores request sent to any such destination,...so there is nothing "extra" that you have to do there.
0
 

Author Closing Comment

by:ServDeskKnows
ID: 37603638
Proxy works, but I was trying to avoid it.

Extra points to PAC files and a nod to Firewall configuration.
0

Featured Post

Efficient way to get backups off site to Azure

This user guide provides instructions on how to deploy and configure both a StoneFly Scale Out NAS Enterprise Cloud Drive virtual machine and Veeam Cloud Connect in the Microsoft Azure Cloud.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
OSPF Design NSSA 5 60
Download Speeds - Speedtest is fast, everything else is slow 31 123
Office 2016 Network Activation 2 29
Cannot create a homegroup on my computer 7 19
We recently endured a series of broadcast storms that caused our ISP to shut us down for brief periods of time. After going through a multitude of tests, we determined that the issue was related to Intel NIC drivers on some new HP desktop computers …
Trying to figure out group policy inheritance and which settings apply where can be a chore.  Here's a very simple summary I've written which might help.  Keep in mind, this is just a high-level conceptual overview where I try to avoid getting bogge…
Viewers will learn how to properly install and use Secure Shell (SSH) to work on projects or homework remotely. Download Secure Shell: Follow basic installation instructions: Open Secure Shell and use "Quick Connect" to enter credentials includi…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

776 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question