Wednesday, January 16, 2008

Server 2008 Firewall

Interesting problem discovered today.

Windows Server 2003 used the Firewall Service as a layer of software all network traffic used to pass through it. When you disabled the service, you disabled the firewall.

However, Server 2008 does this differently. The Firewall service is no longer an abstraction layer, but more similar to IPTables in Linux. The firewall service actually controls the settings of the firewall, it does not control the firewall itself. So, if you want the firewall turned off, you actually have to tell the firewall to turn off. Nice feature.

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