Math Tec
asked on
Deny unauthorized DHCP server in the network
Hi,
I have two DHCP servers running under windows server 2016. My question is how can I deny any other unauthorized DHCP server in the network? The server are connected to Cisco 9300 switch then to core switch 6807
Each server has two LAN's with an IP address
Server1
192.168.0.248
192.168.0.249
Server2
192.168.0.250
192.168.0.251
Thanks
I have two DHCP servers running under windows server 2016. My question is how can I deny any other unauthorized DHCP server in the network? The server are connected to Cisco 9300 switch then to core switch 6807
Each server has two LAN's with an IP address
Server1
192.168.0.248
192.168.0.249
Server2
192.168.0.250
192.168.0.251
Thanks
ASKER
Hi,
Thank you for your reply, I do believe I can do that with DHCP snooping. However, I do not know how to do that
Any suggestion?
Thanks
Thank you for your reply, I do believe I can do that with DHCP snooping. However, I do not know how to do that
Any suggestion?
Thanks
ASKER CERTIFIED SOLUTION
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https://community.broadcom.com/symantecenterprise/communities/community-home/librarydocuments/viewdocument?DocumentKey=e37dd769-ce18-488b-b188-fbacffd7d76a&CommunityKey=1ecf5f55-9545-44d6-b0f4-4e4a7f5f5e68&tab=librarydocuments
"Find DHCP displays the DHCP servers active on your network, just run this portable tool and in few seconds will be shown many helpful information such as IP address offered by dhcp server, netmask, gateway, servers network address and dhcp lease. You can use this freeware tool to discover rogue DHCP servers or just for a quick check on your network."
You can then go hunt the device down. As far as forbidding unauthorized DHCP servers automatically, I am not sure it can be done.