This article details which firewall software is compatible with PGP Desktop 10.
PGP Desktop for Windows has been tested with the following personal firewall software:
Zone Alarm: The Zone Alarm firewall, by default, restricts access to localhost. Since PGP Desktop redirects connections to localhost, this stops PGP Desktop from working correctly. To correct this, add localhost (127.0.0.1) as a trusted IP address in Zone Alarm (on the Firewall/Zones screen). Email proxying by PGP Desktop will work normally once this is configured. 
CyberArmor Personal Firewall: PGP Desktop 10.0 is not compatible with InfoExpress CyberArmor Personal Firewall versions 2.6.050802 or 3.2.050802 or prior. Before you install PGP Desktop, you must upgrade these versions: contact your helpline or the vendor (InfoExpress at firstname.lastname@example.org) for more information. 
Webroot Desktop Firewall: PGP Desktop is compatible with Webroot Desktop Firewall Version 5.8 only. Earlier versions of Webroot software are not compatible with PGP Desktop.
Imported Document ID: TECH149711
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