Internal network IP address protection method based on ARP responce
A technology of IP address and intranet, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve the problems of high price, inability to formulate security policies in advance, failure to comply with the audit system, etc., and achieve good blocking effect Effect
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[0028] Such as figure 1 As shown, a method for protecting the IP address of the intranet based on ARP response,
[0029] Suppose there are the following simulation parameters in Table 1:
[0030] Host Mac address (physical address of the network card) Remarks Host 1 11:11:11:11:11:11 Use IP 192.168.0.1 legally Host 2 22:22:22:22:22:22 Illegal use of IP 192.168.0.1 Monitoring host 33:33:33:33:33:33 Host where the control program is located
[0031] Table I
[0032] It includes the following steps:
[0033] 1) The monitoring host starts the network monitoring program and loads the IP address management strategy;
[0034] 2) When a host goes online, the host broadcasts a broadcast packet, which includes the host's hardware address and its IP address to be used, and starts timing, such as starting a timer and waiting for a response; the format of the broadcast packet As shown in the following table two:
[0035] Host source address...
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