Please read these instructions to find a satellite photo image of your home town: Put your mouse cursor near your location, click down and drag to the middle. Alternatively, type the name of your location here: Centre the map around. Now enlarge the map scale by using the + sign on the upper left side of the map. Click on this and the map will enlarge. Repeat the process of mouse dragging to centre the map as necessary. Choose the Map, Satellite or Terrain photo image as you get closer and hopefully you will find your town.
The protocol to which the rule will apply must be specified. Most often, this is TCP, UDP, or ICMP, but other protocols such as ESP, AH, and GRE are regularly encountered when dealing with VPNs. Some confusion arises when a person is really unsure of what protocol to use.
The TCP/IP network architecture. TCP/IP is a shorthand for the two most important protocols used to make the Internet work. The Internet Protocol (IP) is responsible for transferring these data packets, while the Transmission Control Protocol (TCP) makes sure all packets arrive safely, retransmitting them if necessary. An alternative to TCP is the User Datagram Protocol (UDP), which is an unreliable but fast protocol that is often used for data transfer. The Internet architecture is made up of five layers that work together. These five layers are, from high to low: The Application Layer; The Transport Layer; The Network Layer; The Link Layer; The Physical Layer