DSL-522T ADSL Router User Guide
Firewall
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.
|
|
|
| Service Filtering may |
|
|
|
|
| interfere with other |
|
|
|
|
| configurations such as |
|
|
|
|
| DHCP Relay or |
|
Note |
|
| |||
| Remote Management |
| |||
|
|
|
|
| |
|
|
|
| via Telnet. |
|
|
|
|
|
|
|
Firewall
Configura
tion 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 | • | FIN/URG/PSH attack | • | Ping from WAN |
• | ICMP Redirection check | • | Xmas Tree Scan | • | Telnet from WAN |
|
| • | Null Scan attack | • | FTP from WAN |
|
| • | SYN/RST attack | • | DNS from WAN |
|
| • | SYN/FIN Scan | • | IKE from WAN |
|
|
|
| • | RIP from WAN |
|
|
|
| • | DHCP from WAN |
|
|
|
| • | ICMP from LAN |
53
