how to get the port of an ip address?

Question

I got a challenge from my teacher today. He gave us an IP number of a server that we need to send our name to by a socket. So, my qestion is how can I find the port number only with the IP?

Answer 1

尝试扫描给定的ip并查找与您对话的开放端口，或者只是尝试将消息发送到每个开放端口。