Error 678 when connecting to the Internet

[DllD]

When I connect to the internet, I get error 678. If I turn firewall, then everything is fine. But to live without a firewall is not an option what may be the problem?

[leight]

What is your Firewall? change your firewall and then try !!

[DllD]

I use Zone Alarm.

[leight]

Check all your settings and set them to state. Or otherwise completely remove and reinstall it.