ok, varnish is running properly now (at least so it seems..)
what i did is:
in CentOS Web Panel Settings --> Edit setting, I did set my IP
in Varnish Settings i did set port 82 for Apache, My server IP for Apache IP, and port 80 for Varnish, leaving the rest as default.
That way it worked with Varnish and my IP (not 127.0.0.1)
I don't know if this configuration will, creating other problems along, but for the moment Varnish is working, with my server IP.
Hope it can help someone.