What is a proxy IP address? When you connect to the Internet through proxies, the IP of the proxy server will be shown in place of your home IP address. Proxy IP addresses are designed to provide you with more privacy while you surf the web. A port number is part of the addressing information used to identify the receivers and senders of network messages. These numbers are also usually associated with TCP/IP network connections. Port numbers allow different applications on the same computer to share network resources. What’s more, port numbers can start from 0 and go up to 65535.
As seen in the image, the digits marked in red, comprise the IP address of a proxy IP address. The number marked in blue is the port number. 8080 is the default port number, and is commonly used for proxy and caching.
Understanding TCP / IP Protocol
TCP/IP is a suite of communications protocols used for interconnecting network devices on the Internet. Transmission Control Protocol/Internet Protocol uses two protocols – TCP and IP – and implements layers of protocol stacks. Each layer is designed to provide a well-defined network service to the upper layer protocol.
Understanding Application Layers
An application layer is one of the layers in the TCP/IP protocol suite and Open Systems Interconnection seven-layer model. Application layers comprise the protocols that facilitate process-to-process communication across an IP network. Some of the common application layer protocols include:
- HTTP (Hypertext Transfer Protocol)
- SMTP (Simple Text Transfer Protocol)
- SNMP (Simple Network Management Protocol)
- FTP (File Transfer Protocol)
Understanding Transport Layers
The transport layer protocol is the fourth layer of the OSI reference model. It enables transparent data transfer between two communicating systems or end systems that are using the services of a network layer, for e.g. an Internet Protocol layer. Since transport layers provide end-to-end information transfer and control, it is safe to say that it will provide reliable and cost effective data transfer as well as the quality of service needed by a particular application program.
Understanding Network Layers
Network layers are considered the backbone of the Open Systems Interconnection Model. It is also the third level of the model and provides data routing paths for smooth network communication. In a network layer, data will be transferred in the form of packets through one or more logical network paths in an organized format.
Understanding Data Link Layers
In computer networking, the data link layer is the second layer of the OSI model. The layer is also responsible for transferring data between nodes on a local area network or adjacent network nodes in a wide area network. Common data link protocols include Point-to-Point Protocol, Ethernet, Advanced Data Communication Control Procedures, and more.