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тАО05-18-2010 07:21 AM
тАО05-18-2010 07:21 AM
Dynamic IP Lockdown
Hi all,
The company I work for at the moment is considering LAN security.
There are several options to choose from.
One of the options I consider to implement is Dynamic IP lockdown (besides DHCP snooping protection and ARP protection).
Am I right that dynamic IP lockdown:
1. Locks an IP and MAC address combination to a port
2. Prevents "using" a e.g workstations IP and MAc-address combination even when a ws is turned off.
Another question I have:
3. What age-out mechanism is used (mac-age-out?)
TIA
Jaap
The company I work for at the moment is considering LAN security.
There are several options to choose from.
One of the options I consider to implement is Dynamic IP lockdown (besides DHCP snooping protection and ARP protection).
Am I right that dynamic IP lockdown:
1. Locks an IP and MAC address combination to a port
2. Prevents "using" a e.g workstations IP and MAc-address combination even when a ws is turned off.
Another question I have:
3. What age-out mechanism is used (mac-age-out?)
TIA
Jaap
2 REPLIES 2
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тАО05-18-2010 10:59 AM
тАО05-18-2010 10:59 AM
Re: Dynamic IP Lockdown
Yes, Dynamic IP Lockdown works exaclty how you described it and it is an addon to the arp protection feature. It checks each IPv4 packet received from a port (wirespeed!) so, if this feature is enabled on a port, then it is not possible to steal IP+MAC combination by using a computer connected to that port.
There is no age-out mechanisms. It uses the same database like in the arp-protect feature. Entries can be collected automatically (dhcp snooping) or inserted manually:
ip source-binding
So, it is possible to use it also when it is not feasible to require a dhcp assigment (think of servers).
There is no age-out mechanisms. It uses the same database like in the arp-protect feature. Entries can be collected automatically (dhcp snooping) or inserted manually:
ip source-binding
So, it is possible to use it also when it is not feasible to require a dhcp assigment (think of servers).
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тАО05-25-2010 03:18 AM
тАО05-25-2010 03:18 AM
Re: Dynamic IP Lockdown
Hi Krzysztof,
Thanks for your answer.
This will help me convince my manager :).
Greetz Jaap
(A late response because of the "black-out")
Thanks for your answer.
This will help me convince my manager :).
Greetz Jaap
(A late response because of the "black-out")
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