Configuration Guide IP Source Guard Configuration
Figure 3 Network with feigned DHCP client attack
Figure 4 Network protected by DHCP Snooping
By filtering DHCP packets, DHCP Snooping shields feigned servers and block the
attacks from the clients. However, it cannot control the users assign IP addresses
privately. Those users easily lead to conflict of network addresses and be harm to the
management of network addresses. To prevent the clients from assigning addresses
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