(How to use AntiARPSniffer: 1. Fill in the IP address of the gateway, and click [Get Gateway Address] to display the MAC address of the gateway. Click [Auto Protection] to maintain the communication between the current network card and the gateway from being monitored by a third party. Note: If there is an ARP spoofing prompt, it means that the attacker sent ARP spoofing packets to obtain the data packets of the network card. If you want to trace the source of the attack, please remember the attacker's MAC address. Use a MAC address scanner to find out the corresponding IP address. The MAC address.2 and IP address conflict frequently appear IP address conflict, which means that the attacker frequently sends ARP spoofing packets, and the warning of IP conflict will appear. Using AntiARPSniffer can prevent such attacks. 3. You need to know the conflicting MAC addresses, Windows will log these errors. The specific method is as follows: Right-click [My Computer]--[Manage]--Click [Event Viewer]--Click [System]--View the source as [TcpIP]--Double-click the event to see the display address generation Conflict and record the MAC address, please imitate the MAC address and fill it in the local MAC address input box of AntiARPSniffer (please note: convert : to -), click [Protect Address Conflict] after the input is completed, in order to make the MAC address valid Please disable the local network card and then enable the network card. Enter Ipconfig/all in the CMD command line to check whether the current MAC address matches the MAC address in the local MAC address input box. If the change fails, please contact me. If successful, the address conflict will no longer be displayed. Note: If you want to restore the default MAC address, please click [Restore Default], in order to make the MAC address effective, please disable the local network card and then enable the network card)