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DSL-504T DSL Router User’s Guide
38
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
Nmap/FIN attack
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
The Firewall Configuration menu 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 enable
DoS Protection or Port Scan
Protection, select the Enable 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.