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DSL-G684T Wireless ADSL Router User Guide
Firewall
Firewall
Configur
ation window
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
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.
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.
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