I’ve installed several times Comodo Firewall and when it is intalled the internet doesn’t work, then when uninstall the net back!
My net is the operator: Optimus Kanguru
Comodo Firewall for me is the best firewall, but with this problem I had to uninstall!
How with the option DNS Comodo at installation?
What type of connection are you on? Did you install CIS v 6.3?
Could you try the procedure described in ]No network connection after using Stealth Ports Wizard (DHCP Broken) [v4]?
When that doesn’t work could you post a screenshot of the Firewall logs?