DSL-2640T ADSL 2+ Router User Guide
69
Firewall
Firewall Configuration menu
When DoS, Port Scan, or Service Filtering Protection is enabled, it will create a firewall policy to protect your network
against the following:
Dos Protection
Port Scan Protection
Service Filtering
•
SYN Flood check
•
ICMP Redirection check
•
FIN/URG/PSH attack
•
Xmas Tree Scan
•
Null Scan attack
•
SYN/RST attack
•
SYN/FIN Scan
•
Ping from WAN
•
Telnet from WAN
•
FTP from WAN
•
DNS from WAN
•
IKE from WAN
•
RIP from WAN
•
DHCP from WAN
•
ICMP from LAN
The
Firewall Configuration
window allows the
Router to enforce specific predefined policies
intended to protect against certain common types
of attacks. There are two general types of
protection (DoS, Port Scan) that can be enabled
on the Router, as well as filtering for specific
packet types sometimes used by hackers.
You can choose to
enable or disable protection
against a customized basket of attack and scan
types. To use
DoS Protection
or
Port Scan
Protection
, select the
State
Enabled radio button
for the protection type and click in the selection
boxes for the various types of protection listed
under each.
Note
Service Filtering may
interfere with other
configurations such as
DHCP Relay or
Remote Management
via Telnet.
