Specifications

DSL-504T Generation II ADSL2+ Modem Router
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
Service Filtering may
interfere with other
configurations such as
DHCP Relay or Remote
Management via Telnet.
Note
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.
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