What is Switchport port security maximum?

What is Switchport port security maximum?

router(config-if)#switchport port-security maximum value [vlan {vlan-id | {access | voice}] Configures the maximum number of MAC addresses that are permitted by switchport security; by default this is set to 1 MAC address.

What is Layer 2 port security?

Layer 2 Switch Operation A switch provides Data Link Layer (or Layer 2) connectivity on an Ethernet network. Devices transmit data frames based on a unique 48-bit MAC address (Figure 1). The data frame contains a destination address and the sender’s source address.

What are the types of 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 Switchport port security?

Overview. The switchport security feature (Port Security) is an important piece of the network switch security puzzle; it provides the ability to limit what addresses will be allowed to send traffic on individual switchports within the switched network.

What are some common 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.

What is Switchport port security command?

The switchport security feature (Port Security) is an important piece of the network switch security puzzle; it provides the ability to limit what addresses will be allowed to send traffic on individual switchports within the switched network.

What is Layer 2 access control?

Layer 2 access control lists perform packet filtering to control which packets move through the network and where. Such controls help to limit incoming and outgoing network traffic and restrict the access of users and devices to the network at the port level.

What are the three methods of implementing port security?

Three possible modes are available:

• Protect: – This mode will only work with sticky option.
• Restrict: – In restrict mode frames from non-allowed address would be dropped.
• Shutdown: – In this mode switch will generate the violation alert and disable the port.
• Switch(config)# errdisable recovery cause psecure-violation.

What is a Switchport?

Switch ports are Layer 2-only interfaces associated with a physical port. A switch port can be an access port, a trunk port, or a tunnel port. Switch ports are used for managing the physical interface and associated Layer 2 protocols and do not handle routing or bridging.

What are seven Layer 2 attacks?

Security issues addressed in this session include ARP spoofing, MAC flooding, VLAN hopping, DHCP attacks, and Spanning Tree Protocol concerns. Common myths about Ethernet switch security are confirmed or debunked, and specific security lockdown recommendations are given.

What’s the maximum MAC address for a switch port?

The default “switchport port-security maximum” value for the port is “1”. So unless you change this value to “2” your port can sense max. 1 MAC address in either vlan “access” or “voice” ONLY without triggering violation. This means that the total maximum number of MAC addresses allowed per all configured vlans per port equals ONE at the

What does Switch port Port Security Command do?

switchport port-security command is used to enables it. Port security feature does not work on three types of ports. Trunk ports; Ether channel ports; Switch port analyzer ports; Port security work on host port. In order to configure port security we need to set it as host port. It could be done easily by switchport mode access command.

What’s the maximum number of hosts that can be associated with a switchport port?

According to our requirements we can limit the number hosts that can be associated with an interface. We can set this limit anywhere from 1 to 132. Maximum number of devices that can be associated with the interface is 132. By default it is set to 1. switchport port-security maximum value command will set the maximum number of hosts.

How does the switchport security feature work in Windows 10?

Without configuring any other specific parameters, the switchport security feature will only permit one MAC address to be learned per switchport (dynamically) and use the shutdown violation mode; this means that if a second MAC address is seen on the switchport the port will be shutdown and put into the err-disabled state.