What is VLAN hopping attacks?
What is VLAN hopping attacks?
Virtual local area network hopping (VLAN hopping) is a method of attacking the network resources of the VLAN by sending packets to a port not usually accessible from an end system. The main goal of this form of attack is to gain access to other VLANs on the same network.
How can VLAN hopping attacks be prevented?
To prevent the VLAN hopping from being exploited, we can do the below mitigations: Ensure that ports are not set to negotiate trunks automatically by disabling DTP: NEVER use VLAN 1 at all. Disable unused ports and put them in an unused VLAN ▪ Always use a dedicated VLAN ID for all trunk ports.
What are the two main approaches for launching a VLAN hopping attack?
VLAN hopping attack can be possible by two different approaches, Switch Spoofing or Double tagging.
What are Layer 2 attacks?
7 Popular Layer 2 Attacks
- Overview.
- Spanning Tree Protocol (STP) Attacks.
- Address Resolution Protocol (ARP) Attacks.
- Media Access Control (MAC) Spoofing.
- Content Addressable Memory (CAM) Table Overflows.
- Cisco Discovery Protocol (CDP)/Link Layer Discovery Protocol (LLDP) Reconnaissance.
- Virtual LAN (VLAN) Hopping.
Which two practices would you follow to prevent VLAN attacks on a network?
To prevent a Switched Spoofing attack, there are a few steps you should take:
- Do not configure any access points with either of the following modes: “dynamic desirable”, “dynamic auto”, or “trunk”.
- Manually configure access ports and disable DTP on all access ports.
Which feature on a switch makes it vulnerable to VLAN hopping attacks?
Answers Explanation & Hints: A VLAN hopping attack enables traffic from one VLAN to be seen by another VLAN without routing. In a basic VLAN hopping attack, the attacker takes advantage of the automatic trunking port feature enabled by default on most switch ports.
Which method is used when an attacker attempts a VLAN hopping attack?
VLAN hopping can be accomplished in one of two ways: Switch SpoofingWith a switch spoofing method, an attacker imitates a trunking switch by using the VLAN’s tagging and trunking protocol (Multiple VLAN Registration Protocol, IEEE 802.1Q, or Dynamic Trunking Protocol).
What kind of attacks are there at Layer 3?
What are layer 3 DDoS attacks? A distributed denial-of-service (DDoS) attack attempts to overwhelm its target with large amounts of data. A DDoS attack is like a traffic jam clogging up a freeway, preventing regular traffic from reaching its destination. Layer 3 DDoS attacks target layer 3 (L3) in the OSI model.
What kind of attacks are there at Layer 2 and Layer 3?
ARP Poisoning and DHCP snooping are layer-2 attacks, where as IP Snooping, ICMP attack, and DoS attack with fake IPs are layer-3 attacks.
How do you do VLAN hopping?
There are two primary methods of VLAN hopping: switch spoofing and double tagging. Both attack vectors can be mitigated with proper switch port configuration….Mitigation
- Simply do not put any hosts on VLAN 1 (The default VLAN).
- Change the native VLAN on all trunk ports to an unused VLAN ID.
What are the three techniques for mitigating VLAN attacks?
Answers Explanation & Hints: Mitigating a VLAN hopping attack can be done by disabling Dynamic Trunking Protocol (DTP), manually setting ports to trunking mode, and by setting the native VLAN of trunk links to VLANs not in use.
What are the types of VLAN hopping?
There are two primary methods of VLAN hopping: switch spoofing and double tagging.
