mac spoofing

Source: People's Network In the internal networks of many schools and companies, some immoral people often use ARP to spoof software and attack others, dropping many people or even paralyzing the entire network. To address this issue, you can take the following measures. Describes a Firewall: Outpost Firewall. It can protect LAN software such as "P2P Terminator", with superb performance. It can also find out which machines are in use on the LAN. It is powerful and consumes less resources and can

ARPAddress Resolution Protocol (Address Resolution Protocol) is a low-level Protocol located in the TCP/IP Protocol stack. It is responsible for parsing an IP address into a corresponding MAC address."Why is the network management disconnected ?!" Every time I hear the client's question, the network manager has a big head. As a matter of fact, the sudden disconnection or wide-area network disconnection is mostly caused by ARP

illegal arp requests ). However, a fixed ip Address can communicate with other machines in the local area network, but cannot learn the mac address of the gateway through arp. Note: The above dhcp servers are all enabled on layer-3 switches. 4. arp spoofing. There are two possible scenarios: one is to forge a gateway to spoof other hosts in the network; the other is to forge other hosts.

hosts on the network will check whether the destination IP address in the packet is the same as the IP address of the host. Ignore this packet if they are different. If they are the same, the host first adds the MAC address and IP address of the sender to its ARP list. If the ARP table already contains information about this IP address, then, the target host sends an ARP response packet to the source host, attaches its

clearly see that the host does not have the MAC address corresponding to this IP address before it communicates with 192.168.7.119. However, after communication, now we know the MAC address of the other Party. In Windows, the MAC address of the other party is stored in the ARP cache. to save network resources and communication time, most operating systems keep

1. Prevention of Mac/cam attacks 　　 The principle and harm of 1.1mac/cam attack1.2 Typical viruses take advantage of mac/cam attack cases1.3 Using Port Security feature to protect against Mac/cam attacks1.4 Configuration1.5 using other techniques to prevent MAC/CAM attacks 　　 　　 2. Prevention of DHCP attacks 　　 2.1 Co

the essence of DNS ID spoofing. How can we achieve this? There are two cases:1. the local host and DNS server, both the local host and the client host are not in the same LAN. The methods are as follows: a large number of DNS response data packets are randomly sent to the client host, with a low hit rate; it is too rude to initiate a Denial-of-Service attack to the DNS server. The BIND vulnerability has a narrow scope of use.2. the local host is at l

possibility of eavesdropping on the conversation between A and B. Continue to think about the above example: C pretend to be A postman, first tell A: "I am A postman" (host C sends A constructed response packet to A, the source IP address is G 192.168.1.1, the source MAC address is the MAC address of C). Stupid A easily believes that the message "C is A postman" is recorded in his mind; C then pretends to

usually a dynamic conversion table (note that the arp table can be set to static in the routing ). That is to say, the corresponding table will be refreshed by the host as needed. This is because Ethernet transmission on the subnet layer is determined by a 48-bit mac address. Generally, before a host sends an IP packet, it needs to find the mac address corresponding to the IP packet in the conversion table

) it is a legal response, as long as you receive the ARP reply package or arp broadcast package (including ARP request and ARP reply) of the target MAC, it will accept and cache it. This provides the possibility of ARP spoofing. malicious nodes can publish fake ARP packets to affect the communication between nodes in the network, or even act as a "man-in-the-middle ". Iii. Common ARP