Help I can only access Fedora/Redhat websites. I can't access other sites

[knadoor]

Hi

Internet works, except for the package updater which gives me errors I don't know why.
This is an interesting one, I can access Fedora/Redhat related websites like this forum but I can't access any other websites like yahoo.com or google for instance.

I have to use:
http://anonymouse.org/anonwww.html

To access other websites.

is there any way I can fix this? Does this have to do with my firewall? How can I fix it? Step by step instructions please as I'm a newbie.

Thanks!