Check if your computer is already using Internet Guide

To quickly determine whether or not your computer is currently using Internet Guide, look at the graphic below. The image will display a red X if your computer is not properly configured. Otherwise, if your computer is properly configured, a green check mark will be displayed.

You can also visit the Internet Guide setup page at at any time from any computer to determine whether or not you are using Internet Guide.

Setting up Internet Guide

For DNS veterans, switching to Internet Guide is easy. Simply replace your current recursive resolvers with: –

We also have tutorials below, that will help you to begin using Internet Guide for a faster, safer browsing experience.

The easiest way to use Internet Guide with Windows is to install the latest Dyn Updater for Windows. During installation, you can enable Internet Guide in your update client, which will make the necessary changes for you.

To manually change your DNS to Internet Guide:

  1. Open the Control Panel from your Start menu.
  2. Click Network Connections and choose your current connection.
  3. On the General tab of the Connection Status screen, click Properties.
  4. On the General tab of Connection Properties, scroll down and select Internet Protocol (TCP/IP), then click Properties.
  5. On the General tab of Internet Protocol (TCP/IP) Properties, select Use the following DNS server addresses, then enter the two Internet Guide IP addresses and
  6. Click OK until each window is closed. You are now using Internet Guide.

To disable: Follow the above instructions. On step five, select Obtain DNS server address automatically on the last screen (or replace our Internet Guide addresses with your recursive resolver IPs). Please note: If you enable Internet Guide through the Dyn Updater, you must also disable Internet Guide through the client.

  1. Open System Preferences.
  2. Click Network.
  3. Choose your current network adapter, and click Advanced.
  4. On the DNS tab, enter the two Internet Guide addresses and

To disable: Follow the above instructions. On step four, remove the Internet Guide addresses (or replace them with your recursive resolver IPs).

Static Interface

In most Unix operating systems, your DNS settings are configured in /etc/resolv.conf. To use Internet Guide:

  1. Open /etc/resolv.conf in any text editor.
  2. Comment out any nameserver or search lines with #.
  3. Add the following two lines:
  4. Save the file and exit the editor.

To disable: Simply remove our Internet Guide nameserver lines from resolv.conf and uncomment the previous settings.

DHCP Interface (dhclient)

Many popular distributions use dhclient if your interface is set to DHCP. To use Internet Guide with dhclient:

  1. Open dhclient.conf, typically located at /etc/dhcp3/dhclient.conf, in any text editor.
  2. Uncomment or add the following line:
    prepend domain-name-servers,;
  3. Restart your network interface. If you are using NetworkManager, you can do this by clicking on the icon and selecting your interface to activate the changes.

To disable: Comment out or remove the line above.

In most cases, DHCP-enabled devices in your network will retrieve DNS settings automatically from your router; by configuring your router to use Internet Guide, these devices will use Internet Guide as well.

The exact method of configuring static DNS settings varies widely from router to router, but usually appears under the DHCP configuration section. For example, under Basic Setup – Network Address Server Settings (DHCP) in the Linksys WRT54G, there are three entries for Static DNS. Entering our two Internet Guide IP addresses, and, will cause the router and all DHCP devices in your network to query Internet Guide for their DNS needs.

Configuring Internet Guide

In addition to speedy DNS lookups and protection from phishing sites, Internet Guide allows you to block unwanted content from your network. To configure what sites get blocked, you need to create a Network and assign a Defense Plan.


Internet Guide applies a user’s Defense Plan (see below) to their Network. A Network can be associated with a Remote Access or Dyn Standard DNS hostname, a static IP address, or a CIDR block (for larger-scale network administrators). Using a DynDNS or Dyn Standard DNS hostname allows the user to keep their Defense Plan synchronized to their location using an update client, useful for residential networks or travelers.

Defense Plan

A Defense Plan is a tailored configuration which allows customers to add content restrictions to their networks. A single Defense Plan can be used for multiple networks, and users can swap Defense Plans at will to allow or disallow particular types of content. Defense Plans have three ways to filter content:

  • Defense Strategy: Similar to movie and television rating systems, Defense Strategies are pre-defined lists of filters which block content by level. Defense Strategies block content within their level and below; for example, choosing PG-13 would also block R and NC-17 sites. By default, only malware and phishing sites are blocked: the categories Phishing, Conficker Worm, and Spyware are selected for your protection.
  • Blocked Categories: For a more fine-tuned approach than Defense Strategies, Blocked Categories prevent users from accessing specific types of content in addition to the current Defense Strategy. By default, only Phishing, Spyware and Conficker Worm are blocked.
  • Tailored Filtering: This section is used to specifically whitelist (always allow) or blacklist (always block) individual domain names. Tailored Filtering settings override the Defense Strategy and Blocked Category pages, allowing visitors to access sites that may be otherwise disabled, and vice-versa.

Once you have created a Network and assigned a Defense Plan, you may begin using Internet Guide immediately.

Using Internet Guide

Using Internet Guide is easy: Once your computer’s DNS is configured to use Internet Guide, and you have configured a Network and Defense Plan, you do not need to make any changes to your browsing habits. With Internet Guide enabled, your online experience will be safer and faster automatically!

By your use and continued use of and/or the Dyn Updater Client and/or Internet GuideSM service and/or the DNS servers located at IP Address or IP Address, you agree to the Terms of Use for