Source port: the port number assigned to the virtual connection on the connection-initiating host.
源端口：分配给启动连接的主机上虚连接的端口号。
2
The IP header includes the source IP address where the packet originates, destination IP address where the packet is going, the transport protocol initiating the request.
IP数据头包括数据包产生地的主机ip地址，数据包即将前往的目的地ip地址，以及发出请求的传输协议。
3
"Jerusalem as a source of inspiration" - a challenging and complex title that was the only guide line for initiating the work process.