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Enable Popular Virus Defense: Select this check box to protect the device against
popular virus attack, e.g., Worm.Blaster and Worm.Sasser. And it will discard those
TCP packets whose destination port is 135, 136, 137, 138, 139, 445, 1025, 5554 or
9996, so your LAN hosts can't access related services provided by outside hosts,
e.g., windows file sharing and print sharing services.
Enable DoS/DDoS Attack Defense: Select this check box to protect the device
against popular DoS and DDoS attack.
Note
If your LAN hosts' IP addresses often change, it is recommended that you don't select
Enable Auto IP/MAC Binding. If you want to manually bind IP and MAC address pairs,
please go to Security > ARP Spoofing Defense page to setup (see chapter 3.5.2).
3.4.2 Rate Limit
In this section, you can specify a bandwidth limit for each LAN host. This function lets
you allocate bandwidth equally to avoid few hosts occupying too much bandwidth.
Max. Rx Rate for each LAN Host: Select the maximum download rate for each
LAN host. If you don't want to limit the download rate, select NoLimit. If you want to
block internal users from downloading, select Block.
Max. Tx Rate for each LAN Host: Select the maximum upload rate for each LAN
host. If you don't want to limit the upload rate, select NoLimit. If you want to block
internal users from uploading, select Block.
Figure 3-12 Rate Limit
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