What are three techniques for mitigating VLAN hopping attacks? (Choose three.) Disable DTP. Enable trunking manually. Set the native VLAN to an unused VLAN. Enable BPDU guard. Enable Source Guard. Use private VLANs.
What are three techniques for mitigating VLAN hopping attacks?
(Choose three.) What are three techniques for mitigating VLAN hopping attacks? (Choose three.) Set the native VLAN to an unused VLAN. Disable DTP. Enable Source Guard. Enable trunking manually. Enable BPDU guard. Use private VLANs.
How do I protect my network from a VLAN attack?
There are many ways to mitigate a VLAN attack, but the most effective method is to disable Dynamic Trunking Protocol (DTP) and disable unused ports. The native VLAN of trunk links should also be disabled. These are just some of the methods you can use to protect your network from a VLAN attack.
What is VLAN hopping and how does it affect security?
Security is one of the many reasons network administrators configure VLANs. However, with an exploit known as 'VLAN Hopping', an attacker is able to bypass these security implementations. Learn more about network segmentation and VLANs here.
Is the trunk port VLAN vulnerable to double tagging attacks?
However, we see that the attacker belongs to the native VLAN of the trunk port. Which means this topology is vulnerable to a Double Tagging attack. An attacker can use the program Scapy, to create the specially crafted frames needed for processing this attack.
What are three techniques for mitigating VLAN hopping 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 is the best way to prevent a VLAN hopping attack?
What is the best way to prevent a VLAN hopping attack?Disable STP on all nontrunk ports.Use ISL encapsulation on all trunk links.Use VLAN 1 as the native VLAN on trunk ports.Disable trunk negotiation for trunk ports and statically set nontrunk ports as access ports. Answers Explanation & Hints:
How can VLAN hopping attacks be prevented on a network?
How can VLAN hopping attacks be prevented on a network? Disable auto trunking and move native VLANs to unused VLANs. The use of virtualization allows for isolation of each guest system such that problems on one system do not affect another system.
What are three techniques for mitigating VLAN attacks choose three disable DTP?
What are three techniques for mitigating VLAN attacks? (Choose three.)Enable trunking manually.Disable DTP.Enable Source Guard.Set the native VLAN to an unused VLAN.Use private VLANs.Enable BPDU guard.
What is the best way to prevent a VLAN hopping attack quizlet?
What is one way to prevent the VLAN hopping attack? Disable DTP negotiation on all ports. Turn trunking off on all ports that are used to connect to hosts and disable DTP negotiation on all trunking ports to prevent the VLAN hopping attack. This type of attack can be attempted through switch spoofing or double tagging.
What protocol should be disabled to help mitigate VLAN attacks?
Explanation: Mitigating a VLAN hopping attack can be done by disabling Dynamic Trunking Protocol (DTP) and by setting the native VLAN of trunk links to a VLAN not in use.
What is VLAN hopping attacks?
VLAN hopping is a computer security exploit, a method of attacking networked resources on a virtual LAN (VLAN). The basic concept behind all VLAN hopping attacks is for an attacking host on a VLAN to gain access to traffic on other VLANs that would normally not be accessible.
Which of the following is an approach to VLAN hopping?
The two approaches the hacker might use for VLAN hopping are as follows: * double tagging-The hacker stacks VLAN tags in Ethernet frames. When the first, legitimate tag is removed by a switch, the second, illegitimate tag is revealed, tricking a switch into forwarding the transmission on to a restricted VLAN.
How do VLANs implement security?
How do VLANs provide security? VLANs limit the ability for any device to hear anything on other Virtual Local Area Networks. On a corporate network, for example, VLANs are often used for virtual workgroups because they make it easier to place geographically-dispersed members together.
What are 3 techniques for mitigating?
What are three techniques for mitigating VLAN attacks? (Choose three.)Disable DTP.Enable trunking manually.Set the native VLAN to an unused VLAN.Enable BPDU guard.Enable Source Guard.Use private VLANs. Answers Explanation & Hints:
What are three possible VLAN attacks?
Ten top threats to VLAN securityCAM Table Overflow/Media Access Control (MAC) Attack. ... Address Resolution Protocol (ARP) attack. ... Switch Spoofing/Basic VLAN Hopping Attack. ... Double Tagging/Double Encapsulation VLAN Hopping Attack. ... VLAN Management Policy Server (VMPS)/ VLAN Query Protocol (VQP) attack.More items...•
Which feature or configuration on a switch makes it vulnerable to VLAN double tagging attacks?
Explanation: A double-tagging (or double-encapsulated) VLAN hopping attack takes advantage of the way that hardware on most switches operates. Most switches perform only one level of 802.1Q de-encapsulation, which allows an attacker to embed a hidden 802.1Q tag inside the frame.
What is a VLAN hopping attack?
VLAN hopping is a computer security exploit, a method of attacking networked resources on a virtual LAN (VLAN). The basic concept behind all VLAN hopping attacks is for an attacking host on a VLAN to gain access to traffic on other VLANs that would normally not be accessible.
What is a method to launch a VLAN hopping attack?
introducing a rogue switch and enabling trunking. flooding the switch with MAC addresses. sending spoofed IP addresses from the attacking host. sending spoofed native VLAN information.
Which of the following ways can be used to execute VLAN hopping?
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).
Which type of VLAN hopping attack may be prevented by designating an unused VLAN as the native VLAN DHCP spoofing?
Which type of VLAN-hopping attack may be prevented by designating an unused VLAN as the native VLAN? Explanation: Spoofing DTP messages forces a switch into trunking mode as part of a VLAN-hopping attack, but VLAN double tagging works even if trunk ports are disabled.
Why is VLAN hopping a security problem?
This is big security problem because attacker can make his switch port become trunk and then he can easily perform VLAN hopping attacks. He can gain access to all VLANs on the switch without the need to route packets through router. Prevent switch spoofing.
How to make switch spoofing impossible?
To make switch spoofing impossible, you can disable trunking on all ports that do not need to form trunks, and disable DTP on ports that do need to be trunks. Preventing the Use of DTP. To help prevent a VLAN hopping attack using double tagging, do not use the native VLAN to send user traffic.
Why do Cisco switches automatically become trunk ports?
That means that the ports automatically become trunk ports if they receive Dynamic Trunking Protocol (DTP) frames on some of the switch ports. This is big security problem because attacker can make his switch port become trunk and then he can easily perform VLAN hopping attacks.
Can you create a VLAN that does not have any ports added?
You can do this by creating a VLAN that does not have any ports added. This unused VLAN is only for the native VLAN assignment. Configuration on a Cisco switch is shown in which the native VLAN has been set to an unused VLAN.