Manage the WAN and LAN Network
Settings
82
AC1600 WiFi Cable Modem Router
7.
The following table describes the protection and ping options on the WAN Setup page.
Field
Description
Disable IPv4 Firewall
Protection
IPv4 firewall protection can secure your network against malicious packets.
To disable IPv4 firewall protection, select the
Disable IPv4 Firewall Protection
check box.
By default, IPv4 firewall protection is enabled. NETGEAR recommends that you
leave the firewall enabled to protect your network.
Disable Port Scan and
DoS Protection
Port scan and DoS protection can protect your LAN against denial of service
attacks such as Syn flood, Smurf Attack, Ping of Death, Teardrop Attack, UDP
Flood, ARP Attack, Spoofing ICMP, Null Scan, and many others. However, when
port scan and DoS protection are enabled, some Apple computers might not be
able to connect to the Internet. By default, port scan and DoS protection are
disabled.
To enable port scan and DoS protection, clear the
Disable Port Scan and DoS
Protection
check box.
Respond to Ping on
Internet Port
By default, this check box is cleared to prevent the modem router from
responding to a ping from the Internet.
To enable the modem router to respond to a ping, select the
Respond to Ping on
Internet Port
check box.
8.
If you changed the settings, click the
Apply
button.
Your settings are saved.
Set Up a Default DMZ Server
The default DMZ server feature is helpful when you are using some online games and
videoconferencing applications that are incompatible with Network Address Translation
(NAT). The modem router can detect some of these applications and function correctly with
them but other applications might not function well. In some cases, one local computer can
run the application correctly if that computer’s IP address is entered as the default DMZ
server.
WARNING:
DMZ servers pose a security risk. A computer that is designated as
the default DMZ server loses firewall protection from exploits on the
Internet. Once compromised, the DMZ server computer attacks
other computers on your network.
Note:
Enabling port scan and DoS protection might affect the performance of the
modem router.
Note:
When you allow the modem router to respond to a ping from the Internet,
the modem router could be discovered by anyone and in that way become
vulnerable to attacks. For optimum security, keep this check box cleared.
