Nod32 3.0.551 and Norton Personal Firewall

Hi all,
sorry for my bad english; after installing the new nod32 the internet connection doesn't work, but if I stop the norton personal firewall the internet connection works!
In Http, under Web browers, I have
c:\...\iexplore.exe
c:\...\Symantec Shared\ccProxy.exe

If I leave the flags on both options, the internet connection doesn't work, but if I put the red cross on the second option (that refer to the firewall, I presume), the connection works.
Is this right or I have to modify other settings to solve the problem?

Thanks for the help.
Bye