This tree shows the concept, we allow first with nVPN Allow1+2 rules and everything else after is disallowed by the Block ALL rule.ġ3. Important: Firewalls work in a hirarchical structure, so from TOP to BOTTOM manner, therefore (in our whitelist to blacklist scenario) rules to allow, must always be added BEFORE (higher) than the Block ALL rule!! Current state should look as follows now, incase not then open the panel and move the rules up/down into an identical order. Open the small panel, click on Add follow the screenshos and hit OK when finished.ġ2. We add two other rules now, which will be the 'Whitelist' rules, so those are rules which define what we want to explicitly allow. Once you have identical settings, click OK.ġ1. For the 'Block ALL' rule, we disallow all Traffic, like shown: Source -> Mac Address, Destionation -> Mac Address, IP details: Any Screenshot shows how it looks after a fresh Comodo install, inside there slide up the panel and click on Add.ĩ. We click on Global Rules now which is the part responsible to block ALL Traffic and only allow Whitelisted definitions. In opening window choose IPv4 Address Range and type in as shown and click OK:Ĩ. Now after this new zone is created, we select the nVPN zone and right click to open menu, Add -> New AddressĦ. Go to Security Settings > Firewall > Network Zones and click on Add then choose New Network Zone and in the opening Window type 'nVPN' and click OK.ĥ. Under Firewall Tasks click on Open Advanced SettingsĤ. After install, we start it directly and set the firewall mode to ' Custom Ruleset' and click on ' Tasks'ģ.

Download & install comodo firewall, it is for free and a decent desktop firewall: hereĢ. Posted by Max Biggavelli on 10 December 2013 08:37Īs in our other KB article for Windows firewall, we describe again the black-whitelisting method but this time for Comodo firewall. Again, we go take the most 'paranoid' and safest approach and disallow ALL Traffic, except the one specifically going through OpenVPN!ġ.

Comodo leak test