Method for allocating ports of address translation equipment and address translation equipment

Abstract

The invention discloses a method for allocating ports of address translation equipment, and the address translation equipment. The method comprises the following steps: allocating a public IP (Internet Protocol) address and a port block to a private IP address used by a user application, and arranging an important application dedicated port block in the port block; NAT (Network Address Translation) equipment acquiring a port from the important application dedicated port block when the NAT equipment converting the private IP address and when the user application belongs to the important application. The method and the address translation equipment disclosed by the invention can carry out differentiated port allocation according to the type of user application; subsequent important application of a user can still acquire the port resource after the ports in the port block of the user are allocated, thereby not influencing the user application experiment and improving the user application experience.

Description

technical field [0001] The invention relates to the technical field of network address translation, in particular to a method for allocating ports by an address translation device and the address translation device. Background technique [0002] The public IPv4 addresses of IANA (The Internet Assigned Numbers Authority: Internet Number Assignment Agency) have been allocated, and the transition to the IPv6-based next-generation Internet is a long-term process. During the transition period, private network IPv4 addresses will inevitably be introduced, so it is necessary to There is an address translation NAT device deployed in the network. NAT (Network Address Translation) is a wide area network (WAN) access technology. It is a conversion technology that converts private (reserved) addresses into legal IP addresses. It is widely used in various types of Internet access methods and various types of networks. middle. NAT not only solves the problem of insufficient 1P addresses...

AI Technical Summary

Problems solved by technology

This method assigns a fixed port block to the user, and randomly assigns a port from the port block when the user accesses the Internet. This method does not require the address translation device to report the address mapping relationship to the traceability system in real time, but if the port block allocated to the user After all the port resources are allocated, the user will not be able to continue to use the network application, and some important applications of the user will be affected

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