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Firewall hidden NAT (Network Address Translation) fault judgment method and device

A fault judgment and firewall technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems such as the slow change in the number of conversations of fire devices, the lack of methods and devices for mining such fault judgments, and equipment failures

Active Publication Date: 2018-05-04
CHINA MOBILE COMM GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to conversion errors, network attacks, or system errors, the number of firer sessions may slowly change and trigger device failures
At present, there is a lack of methods and devices for mining this type of fault judgment

Method used

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  • Firewall hidden NAT (Network Address Translation) fault judgment method and device
  • Firewall hidden NAT (Network Address Translation) fault judgment method and device
  • Firewall hidden NAT (Network Address Translation) fault judgment method and device

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] see figure 2 , the present embodiment discloses a method for judging a hidden NAT fault of a firewall, including:

[0030] S10, periodically counting the number of TCP sessions and the number of UDP sessions of the firewall device, and calculating the ratio of the number of TCP sessions and the number of UDP sessions counted in the current cycle;

[0031] It s...

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Abstract

The invention discloses a firewall hidden NAT (Network Address Translation) fault judgment method and device. A firewall hidden NAT fault can be judged. The method comprises the steps of S10, carryingout periodic statistics on the number of TCP sessions and the number of UDP sessions of a firewall device, and calculating a ratio of the statistic number of the TCP sessions and the statistic numberof the UDP sessions in a current period; and S11, determining whether a hidden NAT fault exists in the firewall device or not according to the ratio.

Description

technical field [0001] The invention relates to the field of core network of mobile communication technology, in particular to a method and a device for judging a hidden NAT fault of a firewall. Background technique [0002] In the field of mobile communication core network or other firewall NAT (Network Address Translation, Network Address Translation) application field, due to the application of NAT function, a small number of public IP addresses represent more private IP addresses, which helps to slow down the available IP addresses. Exhaustion of address space. Moreover, it can effectively avoid attacks from outside the network, hide and protect terminals (or computers) inside the network. The basic flowchart of NAT is as follows: figure 1 shown. [0003] Due to the application of the NAT function, it is inevitable that some NAT conversion problems will lead to insufficient system resources, which will cause firewall failures and cause service unavailability. [0004...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L29/12
CPCH04L43/0817H04L61/256
Inventor 王业亮
Owner CHINA MOBILE COMM GRP CO LTD
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