Block All Sites except a List of 10 to 15

Posted on 2005-04-23
Last Modified: 2013-12-04
I need to block all access to all web sites except 10 to 20 sites. These are stand alone PC's with dialup connections. I am not looking for a filtering soulution that will slow the already slow dialup down even more nor am I looking for an expensive Firewall.

Question by:Jeffrogi
    LVL 38

    Expert Comment

    by:Rich Rumble
    If the users have IE you can easily use the "Content advisor" to do this. But if they have the ability to DL and install software, if they DL'd a different browser like FireFox, content advisor will be by-passed. The surest way to do this is to use a firewall, or even a host's file. Win2k and Xp have IPSEC firewall's built-in, while they can work for this situation, they are not easy to use. I recommend a professional software firewall such as ZoneAlarm or other. A host's file can also do the job, but you need to make sure they only have Read rights to the file so it can't be erased or modified.


    Expert Comment

    What operating system do you have?


    Author Comment

    I have used the Content Advisor, and I had a problem with the users deleting the password with Regedit.
    We use W2K and XP.
    LVL 38

    Accepted Solution

    You can set permssions on registry keys, but if they are admin's of their machines they may be able to cirucumvent the settings. Regedit.exe and regedt32.exe are easy to remove. Host's files will suffer the same problem if the users are administrators of their machines, they may be able to boot into safe mode and take ownership of the file, and or erase it.
    IPSEC firewall filters can also be unassigned with admin rights, but most personal firewall's allow you to specify a password of your chossing, and in the case of ZoneAlarmPro, there is no recovery of the password, and it cannot be uninstalled/upgraded without the proper password.

    Featured Post

    Highfive Gives IT Their Time Back

    Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

    Join & Write a Comment

    Many people tend to confuse the function of a virus with the one of adware, this misunderstanding of the basic of what each software is and how it operates causes users and organizations to take the wrong security measures that would protect them ag…
    Users of Windows 10 Professional can disable automatic reboots using the policy editor. This tool is not included in the Windows home edition. But don't worry! Follow the instructions below to install (a Win7) policy editor on your Windows 10 Home e…
    Sending a Secure fax is easy with eFax Corporate ( First, Just open a new email message.  In the To field, type your recipient's fax number You can even send a secure international fax — just include t…
    Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…

    754 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

    Need Help in Real-Time?

    Connect with top rated Experts

    16 Experts available now in Live!

    Get 1:1 Help Now