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Cisco CCNA Packet Tracer Ultimate labs: Port Security: Answers Part 3
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Understanding How Port Security Works:
You can use port security to block input to an Ethernet, Fast Ethernet, or Gigabit Ethernet port when the MAC address of the station attempting to access the port is different from any of the MAC addresses that are specified for that port. Alternatively, you can use port security to filter traffic that is destined to or received from a specific host that is based on the host MAC address.
Port Security with Dynamically Learned and Static MAC Addresses:
You can use port security with dynamically learned and static MAC addresses to restrict a port's ingress traffic by limiting the MAC addresses that are allowed to send traffic into the port. When you assign secure MAC addresses to a secure port, the port does not forward ingress traffic that has source addresses outside the group of defined addresses. If you limit the number of secure MAC addresses to one and assign a single secure MAC address, the device attached to that port has the full bandwidth of the port.
A security violation occurs in either of these situations:
•When the maximum number of secure MAC addresses is reached on a secure port and the source MAC address of the ingress traffic is different from any of the identified secure MAC addresses, port security applies the configured violation mode.
•If traffic with a secure MAC address that is configured or learned on one secure port attempts to access another secure port in the same VLAN, applies the configured violation mode.
After you have set the maximum number of secure MAC addresses on a port, port security includes the secure addresses in the address table in one of these ways:
•You can statically configure all secure MAC addresses by using the switchport port-security mac-address mac_address interface configuration command.
•You can allow the port to dynamically configure secure MAC addresses with the MAC addresses of connected devices.
•You can statically configure a number of addresses and allow the rest to be dynamically configured.
If the port has a link-down condition, all dynamically learned addresses are removed.
Following bootup, a reload, or a link-down condition, port security does not populate the address table with dynamically learned MAC addresses until the port receives ingress traffic.
A security violation occurs if the maximum nu
...
https://www.youtube.com/watch?v=Q-vsZK2QQ_A
Get the Packet Tracer course for only $10 by clicking here: https://goo.gl/vikgKN
Get my ICND1 and ICND2 courses for $10 here: https://goo.gl/XR1xm9 (you will get ICND2 as a free bonus when you buy the ICND1 course).
For lots more content, visit http://www.davidbombal.com - learn about GNS3, CCNA, Packet Tracer, Python, Ansible and much, much more.
#CCNA #PacketTracer #CCENT
Understanding How Port Security Works:
You can use port security to block input to an Ethernet, Fast Ethernet, or Gigabit Ethernet port when the MAC address of the station attempting to access the port is different from any of the MAC addresses that are specified for that port. Alternatively, you can use port security to filter traffic that is destined to or received from a specific host that is based on the host MAC address.
Port Security with Dynamically Learned and Static MAC Addresses:
You can use port security with dynamically learned and static MAC addresses to restrict a port's ingress traffic by limiting the MAC addresses that are allowed to send traffic into the port. When you assign secure MAC addresses to a secure port, the port does not forward ingress traffic that has source addresses outside the group of defined addresses. If you limit the number of secure MAC addresses to one and assign a single secure MAC address, the device attached to that port has the full bandwidth of the port.
A security violation occurs in either of these situations:
•When the maximum number of secure MAC addresses is reached on a secure port and the source MAC address of the ingress traffic is different from any of the identified secure MAC addresses, port security applies the configured violation mode.
•If traffic with a secure MAC address that is configured or learned on one secure port attempts to access another secure port in the same VLAN, applies the configured violation mode.
After you have set the maximum number of secure MAC addresses on a port, port security includes the secure addresses in the address table in one of these ways:
•You can statically configure all secure MAC addresses by using the switchport port-security mac-address mac_address interface configuration command.
•You can allow the port to dynamically configure secure MAC addresses with the MAC addresses of connected devices.
•You can statically configure a number of addresses and allow the rest to be dynamically configured.
If the port has a link-down condition, all dynamically learned addresses are removed.
Following bootup, a reload, or a link-down condition, port security does not populate the address table with dynamically learned MAC addresses until the port receives ingress traffic.
A security violation occurs if the maximum nu
...
https://www.youtube.com/watch?v=Q-vsZK2QQ_A
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! ======================================================
! Code created by David Bombal !
! Find us at www.davidbombal.com !
! ======================================================
! CONFIG FOR: C1 !
! ======================================================
! HUB SITE !
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mode transport
!
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set transform-set myset
set security-association lifetime seconds 86400
set security-association lifetime kilobytes 4608000
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interface Tunnel 111
description ****** DMVPN GRE Tunnel ******
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no auto-summary
!======================================================
! Code created by David Bombal !
! Find us at www.davidbombal.com !
! ======================================================
! CONFIG FOR: C2 !
! ======================================================
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