With the rapid development of the Internet, we rely more and more on the Internet to complete various tasks in work, study and life. In the process, IP agents have become an important tool for many network-related industry professionals to increase their productivity. As a common proxy method, foreign IP proxy involves global proxy, local proxy and dynamic IP dial-up technology. The following will introduce these principles in detail.
Ⅰ.There are three key concepts to be aware of when using proxy IP
IP proxy is a network technology that helps users hide their real IP addresses and access the target server on their behalf. According to its application scope and functional characteristics, IP agents can be divided into global agents and local agents.
Global proxy is a kind of proxy that sends the user's network data to the proxy server side and forwards the data to the target server through the server side. In a global proxy, all of a user's network traffic is routed through a proxy server, making the user's real IP address hidden. This proxy method is suitable for all network activities that need to be proxy, such as protecting user privacy and breaking geographical restrictions. However, because all network traffic needs to go through the proxy server, it may have some impact on the Internet speed.
Ⅱ.What is the difference between IP and proxy ip?
A local proxy is a more common form of proxy that forwards data only for a specific program or port. Local agents can selectively broker certain applications or services according to the needs of users, without having to mediate all network traffic. Common local proxy types include socks5, http, and web. The advantage of a local proxy is that it can increase the speed of access to a particular website or application and reduce the usage of network bandwidth.
Whether global or local, their basic principle is to forward the user's request through the proxy server, and then from the proxy server to the target server. In this way, the target server can only see the IP address of the proxy server and cannot know the real identity and location of the user. This proxy approach can protect the privacy of users and prevent their personal information from being leaked.
Ⅲ.What is the importance of choosing to use proxy IP in the Internet age?
The principle of foreign IP proxy mainly involves two technologies, namely virtual IP address and ARP protocol based on TCP/IP.
First of all, virtual IP address is a key technology in foreign IP proxy. A proxy IP address is a virtual IP address that is not usually assigned to a real host. In the proxy server configuration, there is a virtual IP in addition to the host IP used to provide the database server. Users can use either of these two IP addresses to connect to the target host. This setup allows the virtual IP to be dynamically switched to an alternate host in the event of a server failure or failure to provide service to ensure continuity of service. Through the switching of virtual IP, foreign IP agents can achieve high availability and failover, and users will not be affected by interruptions or service unavailability when accessing the target server.
Secondly, ARP protocol based on TCP/IP is also one of the important principles of foreign IP proxy. In Ethernet, the IP address is the logical address, and the real data transmission is the MAC address, that is, the physical address. Each host maintains an ARP cache that stores the mapping between IP addresses and MAC addresses. When the host sends data, it first queries the ARP cache for the MAC address corresponding to the destination IP address, and then sends the data to that MAC address. The operating system automatically maintains the ARP cache to ensure the correct match between IP and MAC addresses. In the foreign IP proxy, the proxy server acts as the middleman. After receiving the request sent by the user, the proxy server uses its own MAC address as the source MAC address, replaces the destination IP address with the IP address of the target server, and forwards the request. After receiving the request, the target server sends the response data back to the proxy server, which then forwards the response data to the user. In this way, the target server can only see the IP address and MAC address of the proxy server, and cannot directly obtain the real information of the user.
To sum up, the principle of foreign IP proxy mainly involves virtual IP address and TCP/IP ARP protocol. By using a proxy server, we can hide the real IP address, protect privacy, and realize data forwarding and backup functions. Proxy servers have a wide range of application scenarios in all walks of life, and PublicProxyServers agent is one of the best quality proxy servers, with a large number of proxy server IP resources, covering all over the world, providing the best tools for foreign IP agents. Whether it's speeding up access to specific websites or analyzing network data, foreign IP agents can bring convenience and efficiency to users.
