I have setup my new server according Falko’s “Perfect setup” for Debian Sarge. I have tested this server at home and everything was functioning fine! After changing the network-settings like DNS-servers, IPadresses, subnetmask etc, I have brought the server to a Datacenter a problem appears. I have connecion on ports 21 (FTP) & 22 (SSH) but…no connection through port 80 (http). When I ping to the server there is no data loss. What could be wrong? Please try to help me.