What are the reasons to configure port security on a switch? (Choose two)
To stop unauthorized access to the management interface.
To automatically assign unused ports to an unused VLAN.
To stop unauthorized Telnet or SSH access to the switch over a specific port.
To alert with SNMP messages in case a violation occurs.
To stop unauthorized host from accessing the LAN.
The main reason to use port security in a switch is to stop or prevent unauthorized users to access the LAN. The network engineer can use port security to restrict usage of a specific port, by defining a maximum number of MAC addresses, by statically defining an address, or by applying different violation actions over the interface. To stop unauthorized telnet or SSH access to a management interface the switch must be secured with passwords at the command line, with the VTY console command.
FAQs
To stop unauthorized access to the management interface. To automatically assign unused ports to an unused VLAN. To stop unauthorized Telnet or SSH access to the switch over a specific port.
Why do we configure port security on a switch? ›
Port Security helps secure the network by preventing unknown devices from forwarding packets. When a link goes down, all dynamically locked addresses are freed. The port security feature offers the following benefits: You can limit the number of MAC addresses on a given port.
Why would a network administrator configure port security on a switch? ›
Port security on a switch allows the network administrator to control access to the switch ports.
What are the two possible modes you can configure a port in the switch? ›
The ports, or interfaces, on a switch operate in either access mode or trunk mode.
What are the 3 port security violation modes for a switch? ›
You can configure the port for one of three violation modes: protect, restrict, or shutdown. See the "Configuring Port Security" section. To ensure that an attached device has the full bandwidth of the port, set the maximum number of addresses to one and configure the MAC address of the attached device.
What is the purpose of port security? ›
In a computer network, port security is a feature that restricts which devices may connect to a certain switch port. It protects against various security issues, including unauthorized access, data theft, network attacks, and more. Various methods of configuration, such as MAC address filtering, are available.
What is the purpose of configuring an access port on a network switch? ›
Access ports are network switch ports that are configured to carry network traffic for a specific virtual LAN (VLAN) only. These switch ports are connected with devices such as end user devices within a specified VLAN.
What is the purpose of configuring a switch with an IP configuration? ›
If you want to be able to manage your switch remotely over the network, your switch needs an IP address. If your switch has multiple VLANs configured, and you want to be able to manage the switch from each VLAN, the switch requires an IP address on a VLAN interface in each VLAN.
Why would you want to configure port forwarding on a firewall? ›
Port forwarding is useful whenever you need to make a direct connection between a device in your home network and a remote device. For example: Watch a security camera or baby monitor when you're away from home. Connect to your home server remotely.
When a network administrator configures the port security feature on a switch the security policy specifies? ›
A network administrator configures the port security feature on a switch. The security policy specifies that each access port should allow up to two MAC addresses. When the maximum number of MAC addresses is reached, a frame with the unknown source MAC address is dropped and a notification is sent to the syslog server.
Port configuration starts with the basics of duplex and speed. Sometimes switch ports must manually have their duplex mode and speed manually configured. Most of the time the technician simply connects a cable and lets the network device and switch automatically negotiate these parameters.
Which configuration mode allows to configure a particular port on a switch? ›
The port can be configured to function in Trunk or Access mode. Trunk Mode or Access Mode. By default, a port is in Access mode and carries traffic only for the VLAN.
What are two methods for switching data between ports on a switch? ›
There are 2 methods that all switch use for forwarding the frames (switching data) between the network ports: Store and forward switching. Cut-through switching.
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.
How to secure ports in a switch? ›
An alternate method is to put the switch port into "sticky" mode, allowing it to learn and remember the MAC address of the first device connected to the port. That MAC address is then saved to the running configuration and treated as a static MAC address assignment from that point on.
What is the difference between port security restrict and port security protect? ›
restrict – is identical with protect mode, but notifies you when a security violation occurs. Specifically, a SNMP trap is sent, a syslog message is logged and the violation counter increments. shutdown – this is the default behavior on a switch. In this mode, the switch ports shuts down when the violation occurs.
Why is security important at the port? ›
Why Is Port Security Important? Generally speaking, port security protects the vessels that come into port, as well as the passengers and goods that they carry. However, it also involves protecting the ports themselves, as well as the countries in which the ports are located.
Why is switch security important? ›
Securing network switches is crucial to protect your network infrastructure from unauthorized access, data breaches, and other security threats.
What is switch port protection? ›
Quick Definition: A protected port is a network port that does not forward traffic to other protected ports on the same switch, even if they belong to the same VLAN. Activating this feature protects networks by limiting hacker access in the case of a cyberattack.
What is port security on a managed switch? ›
This Article Applies to:
Port Security is to protect the switch from the malicious MAC Address Attack by limiting the maximum number of MAC addresses that can be learned on the port. The port with Port Security feature enabled will learn the MAC address dynamically/statically.
