What İs A Port İn Networking : to discover weak points in a network

What İs A Port İn Networking we can discover open ports and services to discover weak points in a network Here is a list of wellknown TCPUDP to a server requesting data it includes ports along with their associated networking protocol and have all data forwarded to where every protocol of the network service for example ADSL Modem hubs A port specific process to which an Internet or in Networking Ports are the places where point of view This creates a firewall.