The BOOTP protocol uses multiple protocols, starting with port 67.
It shouldn't matter which port you use unless it involves a network switch.
To forward ports on your router just login to your router's on-line interface. Port Fowarding is used when a program (lets use FileFind [not a real program]) requests a port the router doesn't understand. Lets say that FileFind requests port 130 on your router, but your router doesn't have a port 130. It does, however, have a 128. The port forwarding tells the request to port 130 to be routed through port 128.
You cannot directly access the parallel port because the operating system is managing that device. Use the file system. The name of the parallel port is "lpt1:". Open that as an ordinary file for write, write to it, and you will be writing on the parallel port.
valves are use in four stroke engine, and ports are use in two stroke engine.
Almost any PC can be used for programming almost any PLC system The programming interface will be either a serial port, a USB port of increasingly, an Ethernet port. The PC will usually require the appropriate development software that is supplied, in most cases, byt eh PLC manufacturer.
Telnet use port number 23,and connected to TCP
Port 53
port 21
Port 80 is the default web server port and IIS would use Port 80 unless configured to use a different port.
port 80 or 27005
Telnet use port number 23,and connected to TCP
connectors are use to connect into the port
Since MP3 and iPod are incompatible, you can't use an MP3 port to connect an iPod; you can only use a port that will accept an iPod cord.
An SMTP port is the port used to transfer email using the SMTP protocol. Typically SMTP is configured to use TCP port 25, although some servers will use TCP port 587.
old ones use LPT or Printer Port and new ones use USB
docking port
The port number which you use is arbitrary as long as you use the same port for the listener (daemon/server) as you use for the client. The IP address which you use is 127.0.0.1.