Mac immigrants

1. Reinstalling the system will not change the MAC address. The MAC address is like your home address, and reinstalling the system is like tearing down an old house and building a new one. However, your address is still the original address, which does not mean that your address will change when you create a new address.

2. How does Wingdows 7 system clean up the ip address? Look at your question, I wonder if you have ever touched a computer. System and IP are two concepts. As long as you go online, the IP address can't be cleared. Unless you don't surf the Internet, there is no IP. IP is like your ID card, and account number is like wingdows7 system. The household registration remains unchanged, and the identity card remains unchanged. Of course, when you immigrate or change your household registration, your ID card will also change. That is, when the computer moves to other places, the Internet IP will change accordingly. However, that's just a change, but it can't be erased.

3, the network management does not seal you, of course, any MAC can. In fact, you can still go to the MAC if he blocks you, but this is not in your question, so I won't say much.

4.arp firewall is a gateway deception, not a virus. Arp firewall can basically prevent general ARP attacks. However, if you meet a real master, you will be useless. Of course, the average master who reaches this level will not use this despicable means.

5. When many people surf the Internet, everyone's IP and MAC can be bound to the device, so that traffic can be shared and ARP spoofing can be prevented.