Hackers use VLAN hopping to bypass network security and access data, introduce viruses, and capture personal information and passwords. They can create a fake switch or send data frames to two different switches to gain access. Network administrators should disable automatic trunking and follow VLAN security protocols to protect against intrusion. VLAN hopping tools can be used to evaluate network security and find vulnerabilities.
Hackers use a variety of means to access computer systems and networks. Virtual local area network (VLAN) hopping allows hackers to bypass network security. There are a couple of VLAN hopping methods used to access data, introduce viruses, and capture personal information and passwords. Both involve sending batches of data called packets to a software-defined port or access point in the virtual network. Creating a fake switch or tricking the switch to receive and send data are the two methods of computer security exploits used by hackers.
Network VLAN hopping sometimes occurs when a hacker creates a program that acts like a switch. By emulating the correct signal and protocol, the switch can be inserted and essentially opened. This gives the attacker unlimited access to the VLANs accessible through that particular port.
Network access is also possible by sending data frames to two different switches. The receive switch is set up to be open to incoming data and then forward this data to another destination. Hackers can override any security measures in place on devices that map VLANs in the network. Regardless of the method used, complete access to computer data is possible, which intruders can delete, modify or corrupt on any connected device. Passwords and bank account information can also be accessed and viruses, malware and spyware transmitted.
Intrusion into virtual networks is one of the most significant methods of compromising computer network security. Switches in a VLAN are usually set up to find a channel to send and receive data, called trunking. Automatic trunking can be disabled to protect the network from VLAN hopping. Network administrators and users should also follow the VLAN security protocols issued by the companies that supply the switches. The default VLAN is the most vulnerable, so using a different virtual network can often make it more difficult for hackers to break in.
Network security can be evaluated using VLAN hopping tools. Mausezahn is a program that allows you to send data packets in large quantities over the network. Capable of generating network traffic, it can test the security of firewalls. The software can also measure how the network performs in response to different types and volumes of traffic. Software users can also intentionally violate network rules to find vulnerabilities or bugs; this way, problems can be fixed before hackers attempt VLAN hopping or other attack methods.
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