Procom CGA7740N ユーザーズマニュアル

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Configuring the Wireless ADSL Modem Router
9
4.3.2 ISP settings
Click on VCx to open the ISP settings parameters window.
Enter the ISP settings parameters provided by your Internet Service 
Provider here.
4.3.3 Parameters
This page allows you to specify the ADSL standards to operate with. 
You may explicitly set specific standard, or choose "Automatic" to 
automatically negotiate with remote DSLAM.
4.3.4 DNS
Domain Name Servers (DNS) are used to map a domain name (e.g., 
www.philips.com) with the IP address (e.g., 64.147.25.20). The DNS 
address is usually configured automatically. If this is not the case, one or 
more DNS address will be provided to you by your ISP.
4.4
Security webpages
4.4.1 Firewall
The ADSL Wireless Base Station’s firewall inspects packets at the 
application layer, maintains TCP and UDP session information including 
time-outs and the number of active sessions, and provides the ability to 
detect and prevent certain types of network attacks.
Network attacks that deny access to a network device are called 
Denial-of-Service (DoS) attacks. DoS attacks are aimed at devices and 
networks with a connection to the Internet. Their goal is not to steal 
information, but to disable a device or network so users no longer have 
access to network resources.
The ADSL Wireless Base Station firewall function protects against the 
following DoS attacks : IP Spoofing, Land Attack, Ping of Death, IP with 
zero length, Smurf Attack, UDP port loopback, Snork Attack, TCP null 
scan, and TCP SYN flooding.
The firewall does not significantly affect system performance, so we 
advise leaving it enabled to protect your network. Select "Enable" and 
click the "SAVE SETTINGS" button to open the Firewall submenus.