Firewalls

Hello, I want to ask I have installed in your PC, your prohlžeč Comodo Dragon Browser Chromium-Based PC and have installed antivirus ESET Smart Security 6 and occasionally pop up message was detected DNS cache poisoning attack and this is me about it if it is not problem, if you need two firewalls quarrel I had prom in PC. Thank you in advance for your answer. Pepa. Please contact my mail: gusepino@gmail.com. thank you JoseKarera