Ip Source Guard - Planet Networking & Communication LRP-822CS User Manual

4.9.9 IP Source G uard
IP Source Guard is a secure feature used to restrict IP traffic on DHCP snooping untrusted
DHCP Snooping Table or manually configured IP Source Bindings. It helps prevent IP spoofing attacks when a host tries to
spoof and use the IP address of another host.
After receiving a packet, the port looks up the key attributes (including IP address, MAC address and VLAN tag) of the packet in
the binding entries of the IP source guard. If there is a matching entry, the port will forward the packet. Otherwise, the port will
abandon the packet.
IP source guard filters packets bas
 IP-port binding entry
 MAC-port binding entry
IP-MA C-port binding entry

ed on the following types of binding entries:
User's Manual of LRP-822CS/LRP-1622CS
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ports by filtering traffic based on the