Computer displays IP address conflict How do IP addresses conflict with other network systems

is with IP conflict resolution

This situation is mainly due to other computers under the router is also using your computer's IP address, resulting in IP address conflicts, there is no access to the Internet and so on.

The main reasons for this situation are:

1, the local computer uses the 192.168.1.1 IP address, and the router is very sudden. The router defaults to an administrative address of 192.168.1.1, so computers under the router cannot use the address, and you can use the address between 192.168.1.2-192.168.1.254.

2, the computer under the router change IP, the IP address of the modified and your computer IP address the same.

For IP address conflicts, you can change the IP address of your computer to prevent IP address conflicts.

Right-click the "Network Neighborhood"-> "Properties":

Pop-up Management Network Connection window, right click on "local Connection"-> "properties."

In the local Area Connection properties, double-click Internet Protocol (TCP/IP):

Can be set up for IP addresses. Can be set manually, if the router turns on DHCP, it can also be set to automatically obtain the IP address and DNS server address.

Here is the IP address conflict causes and solutions.

1, LAN IP address conflict.

(1) ARP virus causes IP address conflict.

Symptoms of ARP virus:

Sometimes not normal access to the Internet, sometimes good, including access to the network of neighbors is also so, copy files can not be completed, there are errors; the ARP packet explosion in the LAN, the use of ARP query will find an abnormal MAC address, or the wrong MAC address corresponding, There is a MAC address corresponding to multiple IP situation will also appear.

The principle of ARP attack

ARP spoofing attack packets generally have the following two features, one can be considered to meet the attack packet alarm: The first Ethernet packet header source address, Destination address and ARP Packet protocol address does not match. Alternatively, the sending and destination address of the ARP packet is not in its own network card Mac database, or it does not match its own network Mac database MAC/IP. These are all the first time to call the police, check the data packets (Ethernet packets) Source address (also may be forged), it is generally known that the machine is launching an attack. Now there are network management tools such as network law enforcement officers, Peer-to-peer Terminator will also use the same way to disguise as a gateway, deceive the client access to the gateway, that is, will be sent to the gateway traffic, so as to achieve network traffic management and network monitoring functions, but also to network management brings potential harm, It is easy to access the user's password and other related information.

ARP Virus processing methods: First clear the ARP virus source, and then install the ARP firewall. For example, we often use the 360arp firewall: Install the firewall and then the IP address with the MAC address bundle, OK.

(2) The ARP conflict caused by automatic obtaining of IP address.

Many companies use the form of LAN, but often some computers do not go to the net, the result of an artificial replacement of IP address, resulting in IP address conflicts, this is to find the conflict of the machine is OK, or install an ARP firewall can be found. You can also release the IP and then get it back on OK. To do this, click "Start" in the lower left corner of the Windows desktop-select "Run", type: Ipconfig/release, click "OK", then click "Start" Again-"run", type: ipconfig/renew, click "OK", Can usually solve the problem