Using The Cli - TP-Link T1600G-18TS Configuration Manual

Configuring Network Security
SYN sPort less
1024
Blat Attack
Ping Flooding
SYN/SYN-ACK
Flooding
WinNuke Attack
Smurf Attack
Ping Of Death
3) Click Apply.
Note:
If a port is in an LAG, its 802.1X authentication function cannot be enabled. Also, a port with 802.1X
authentication enabled cannot be added to any LAG.

5.2 Using the CLI

Follow these steps to configure DoS Defend:
Step 1
Step 2
The attacker sends the illegal packet with its TCP SYN field set to 1 and source
port smaller than 1024.
The attacker sends the illegal packet with the same source port and destination
port on Layer 4 and with its URG field set to 1. Similar to the Land Attack, the
system performance of the attacked host is reduced because the Host circularly
attempts to build a connection with the attacker.
The attacker floods the destination system with Ping packets, creating a
broadcast storm that makes it impossible for the system to respond to legal
communication.
The attacker uses a fake IP address to send TCP request packets to the server.
Upon receiving the request packets, the server responds with SYN-ACK packets.
Since the IP address is fake, no response will be returned. The server will keep
on sending SYN-ACK packets. If the attacker sends overflowing fake request
packets, the network resource will be occupied maliciously and the requests of
the legal clients will be denied.
Because the Operation System with bugs cannot correctly process the URG
(Urgent Pointer) of TCP packets, the attacker sends this type of packets to the
TCP port139 (NetBIOS) of the host with the Operation System bugs, which will
cause the host with a blue screen.
The attacker broadcasts large numbers of Internet Control Message Protocol
(ICMP) packets with the intended victim's spoofed source IP to a computer
network using an IP broadcast address. Most devices on a network will respond
to this by sending a reply to the source IP address. If the number of devices on
the network that receive and respond to these packets is very large, the victim's
host will be flooded with traffic, which can slow down the victim's host and cause
the host impossible to work on.
The attacker sends an improperly large Internet Control Message Protocol (ICMP)
echo request packet, or a ping packet, with the purpose of overflowing the input
buffers of the destination host and causing the host to crash.
configure
Enter global configuration mode.
ip dos-prevent
Globally enable the DoS defend feature.
DoS Defend Configuration
Configuration Guide 568