Tenda G3 User Manual page 82

Device Management
4.6.2 Firewall
Firewall includes ARP Attack Defense, DDOS Defense, and IP Attack Defense.
ARP spoofing is that an attack host in the LAN sends ARP spoofing packets to replace records in the device ARP list
with forged IP and MAC correspondence. This type of ARP attacks seriously affects internal communication in the
LAN. Therefore, ARP protection technology is generated.
By sending a large number of request services to occupy excessive resources, DOS causes destination routers and
servers to be busy in answering requests or waiting nonexistent connection replies so that legitimate user
requests cannot be answered by servers. DDOS defense can prevent the WAN from performing port scanning and
malicious attack on computers in the router or LAN to ensure their safe action.
IP attack defense allows the router to intercept packets with some special IP options as required and record the
information about the host sending these packets in the IP option list.
Click『Security』>『Firewall』to go to the configuration page.
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