Shutdown
What is violation mode in port security?
A security violation occurs if the maximum number of secure MAC addresses have been added to the address table and the port receives traffic from a MAC address that is not in the address table. You can configure the port for one of three violation modes: protect, restrict, or shutdown.
What is the default violation mode?
Shutdown—This mode is the default violation mode; when in this mode, the switch will automatically force the switchport into an error disabled (err-disable) state when a violation occurs. While in this state, the switchport forwards no traffic.
Which port security violation mode is the default quizlet?
What is the default violation mode? Shutdown.
What are the port security modes?
Port security modes
| Purpose | Security mode |
|---|---|
| Turning off the port security feature | noRestrictions (the default mode) In this mode, port security is disabled on the port and access to the port is not restricted. |
| Controlling MAC address learning | autoLearn |
| secure | |
| Performing 802.1X authentication | userLogin |
What is the default port security setting on a switch port?
If you enable switch port security, the default behavior is to allow only 1 MAC address, shutdown the port in case of security violation and sticky address learning is disabled. Next, we will enable dynamic port security on a switch.
What is violation mode?
Violation Mode. In single-host mode you can configure the action to be taken when an unauthorized host on authorized port attempts to access the interface. This is done in the Host and Session Authentication page.
How do I configure port security violations?
Cisco Port Security Violation Modes Configuration
- Step 1: Enter interface configuration mode and input the physical interface to configure.
- Step 2: Set the interface mode to access.
- Step 3: Enable port security on the interface.
How is port security implemented on a switch?
To configure port security, three steps are required:
- define the interface as an access interface by using the switchport mode access interface subcommand.
- enable port security by using the switchport port-security interface subcommand.
Which switch port violation mode drops traffic from non secure MAC addresses while keeping count of packets dropped?
What does the port-security Restrict mode mean? The port is allowed to stay up, but all packets from violating MAC addresses are dropped. The switch keeps a running count of the number of violating packets and can send an SNMP trap and a syslog message as an alert of the violation.
How does port security identify a device?
Using Port Security, you can configure each switch port with a unique list of the MAC addresses of devices that are authorized to access the network through that port. This enables individual ports to detect, prevent, and log attempts by unauthorized devices to communicate through the switch.
Why would you enable port security on a switch?
The main reason to use port security in a switch is to stop or prevent unauthorized users to access the LAN.
What is the effect of entering the Switchport port security configuration command on a switch?
What is the effect of entering the switchport port-security configuration command on a switch? It enables port security globally on the switch. It dynamically learns the L2 address and copies it to the running configuration. It restricts the number of discovery messages, per second, to be received on the interface.
Which device would you use to configure port security?
What can you do? Configure port security on the switch. You’ve just enabled port security on an interface of a Catalyst 2950 switch. You want to generate an SNMP trap whenever a violation occurs.
What is Switchport mode access used for?
The switchport mode command allows us to configure the trunking operational mode on a Layer 2 interface on a Cisco IOS device. By entering the command switchport mode access we configure the interface to operate in access mode. This ensures that the interface will pass traffic for a single VLAN only.
What is the default port security behavior on a trunk link?
The default behavior for a security violation is to shutdown that port permanently.
What are the different ways you can secure using the port security?
Port security implements two traffic filtering methods, dynamic locking and static locking. These methods can be used concurrently. Dynamic locking. You can specify the maximum number of MAC addresses that can be learned on a port.
What is the name of the process that is defined by IEEE 802.1 Q to relay traffic from multiple VLANs?
What is the name of the process that is defined by IEEE 802.1Q to relay traffic from multiple VLANs? vlan tagging.
Which of the following is a network set up with intentional vulnerabilities?
A honeynet is a network set up with intentional vulnerabilities hosted on a decoy server to attract hackers. The primary purpose is to test network security by inviting attacks.
What information does the Switchport port security command use to restrict access to a switch’s interface quizlet?
Port security restricts access to a switch based on MAC addresses.
What is the command used to dynamically learn the MAC address and stick them to the running configuration?
You can configure an interface to convert the dynamic MAC addresses to sticky secure MAC addresses and to add them to the running configuration by enabling sticky learning. To enable sticky learning, enter the switchport port-security mac-address sticky command.
What is violation mode?
Violation Mode. In single-host mode you can configure the action to be taken when an unauthorized host on authorized port attempts to access the interface. This is done in the Host and Session Authentication page.
What are the three port security violation modes?
Cisco IOS Switch offers a security feature, which is known as violation. This feature is used to define the action, which will be executed by switch, whenever port security is violated. Three primary predefined modes can be used, which are Protect, Restrict and Shutdown.
What are the three types of port security?
You can configure the port for one of three violation modes: protect, restrict, or shutdown.
How is port security implemented on a switch?
To configure port security, three steps are required:
- define the interface as an access interface by using the switchport mode access interface subcommand.
- enable port security by using the switchport port-security interface subcommand.
Which subcommand overrides the default action to take upon a security violation?
(Optional) Override the default action to take upon a security violation (shutdown) using the switchport port-security violation {protect | restrict | shutdown} interface subcommand.
What is port security in Cisco?
Port security is a layer two traffic control feature on Cisco Catalyst switches. It enables an administrator configure individual switch ports to allow only a specified number of source MAC addresses ingressing the port.
How do I reset my Cisco security violation count?
You can clear the counter by going into configure terminal, the interface, and flipping port security off then on. this will clear the counters without having to do a restart.
What are the two possible modes you can configure a port in switch?
You can manually configure a port as an access port or trunk port or let the Dynamic Trunking Protocol (DTP) operate on a per-port basis to determine if a switch port should be an access port or a trunk port by negotiating with the port on the other end of the link.
How many modes are there in switch interface?
There are two types of switching modes: Switching Mode–The uPIM appears in the list of interfaces as a single interface, which is the first interface on the uPIM.
What is the effect of entering the Switchport port security configuration command on a switch?
What is the effect of entering the switchport port-security configuration command on a switch? It enables port security globally on the switch. It dynamically learns the L2 address and copies it to the running configuration. It restricts the number of discovery messages, per second, to be received on the interface.
Why should port security be enabled on switch trunk ports?
Port security supports nonnegotiating trunks. –If you reconfigure a secure access port as a trunk, port security converts all the sticky and static secure addresses on that port that were dynamically learned in the access VLAN to sticky or static secure addresses on the native VLAN of the trunk.
In which of the following modes of the command line interface CLI could you issue the command reload to reboot the switch?
In which of the following modes of the CLI could you issue the command reload to reboot the switch? A (User mode) and B (Enable mode) . The command in the question is an EXEC command that happens to require only user mode access.
How many bits within the IEEE 802.1Q tag are used to identify the VLAN of the frame?
VLAN identifier (VID) A 12-bit field specifying the VLAN to which the frame belongs.
What are the vulnerabilities of a security guard?
Five Common Security Vulnerabilities
- Outdated security equipment.
- Accessible and unsecured windows and glass.
- Door gaps.
- Lack of staff training.
- Unmonitored security systems.