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тАО10-11-2008 08:14 AM
тАО10-11-2008 08:14 AM
preventing fake DHCP
Q1
in a big network in terms of vlans and switches (which is already configured and connected) how can we prevent fake dhcp servers from being active on the network.
Q2
please provide some good practices of the ACL's to protect the network resources.
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тАО10-11-2008 11:40 AM
тАО10-11-2008 11:40 AM
Re: preventing fake DHCP
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тАО10-12-2008 09:02 AM
тАО10-12-2008 09:02 AM
Re: preventing fake DHCP
sw(config)# dhcp-snooping
sw(config)# dhcp-snooping authorized-server 192.xxx.xxx.xxx
sw(config)# dhcp-snooping trust 1
interface 1 connect dhcp server
other all port untrust for dhcp server
Q2
please provide some good practices of the ACL's to protect the network resources.
what do you want whit ACL ?
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тАО10-12-2008 10:53 AM
тАО10-12-2008 10:53 AM
Re: preventing fake DHCP
please choose the answer of the following only if you are sure 100%:
1)configure all edge switches' ports as untrusted
2)configure all edge switches' ports as untrusted except the uplink one
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тАО10-12-2008 09:34 PM
тАО10-12-2008 09:34 PM
Re: preventing fake DHCP
all other client port must be untrust
cenk sasmaztin