Norton can block sharing computers on a local network, not allowing you to see other computers on the network.
Please follow the information in this link to disable "Intrusion Prevention" and put exclusions into place that will allow Kennel Connection to be networked: http://www.symantec.com/business/support/index?page=content&id=HOWTO55171
Please note: Networking issues are not the responsibility of Software Connection and must be addressed by you or your technician.