Making sure ZoneAlarm Pro isn't blocking your ISP's servers

You may need to configure ZoneAlarm Pro to allow DNS, DHCP, or other servers at your ISP that are needed to establish or maintain your Internet connection. Follow the steps below to find out.

1. Enable all alerts.

Make sure ZoneAlarm Pro will show you all relevant alerts. To do this:

  1. Click the Advanced button on the Main tab of the Alerts & Logs panel.
  2. Click the Check All button in the Alert Events tab, then click OK.
2. Use the alerts to find out what IP addresses and applications ZoneAlarm Pro is blocking.

Try to access the Internet. If any firewall alerts appear:

1. Note the IP addresses displayed near the top of the alert box. If any applications are mentioned in the alert (for example"svchost.exe" or "services.exe"), note those file names as well.

2. Call your ISP to confirm that these IP addresses belong to their server; and that the applications mentioned are used by your ISP to establish your Internet connection.

 

Note Your ISP's site may resolve to one of several IP addresses, depending on when you connect. In this case, your ISP can provide you with a range, rather than a single IP address.

3. If the blocked IP addresses belong to your ISP, add them to your Trusted Zone. How?
4. Make sure any programs that were mentioned in the alert (for example"svchost.exe" or "services.exe") have server permission for the Trusted Zone. How?

If you have checked the settings described above, and you still can't connect to the Internet, please contact Zone Labs technical support.

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Glossary

DNS (Domain Name System)
A data query service generally used on the Internet for translating host names or domain names (like www.yoursite.com) into Internet addresses (like 123.456.789.0).

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DHCP (Dynamic Host Configuration Protocol)
A protocol used to support dynamic IP addressing. Rather than giving you a static IP address, your ISP may assign a different IP address to you each time you log on. This allows the provider to serve a large number of customers with a relatively small number of IP addresses.

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