Filter
Top Products
How Do I Configure the Cable Modem Gateway?
41
Field Name Description
Port Forwarding Use this page to configure port forwarding for local
IP addresses. Port forwarding allows you to run a
server on the local area network (LAN) by
specifying the mapping of TCP/UPD ports to local
PCs or to the IP address of other devices. This is a
static setting that holds the ports open at all times.
Port Triggers Use this page to configure TCP/UPD port triggers.
Port triggering is similar to port forwarding, but is a
dynamic function. In other words, the ports are not
held open, and the ports close if no outgoing data
is detected on the selected ports for a period of 10
minutes.
DMZ Host
(Demilitarized Zone)
Use this page to configure an IP address that is
visible to the wide area network (WAN). DMZ
hosting is commonly referred to as “exposed host,”
and allows you to specify the “default” recipient of
WAN traffic that Network Address Translation
(NAT) is unable to translate to a known local PC.
A DMZ is used by a company that wants to host its
own Internet services without sacrificing
unauthorized access to its private network. DMZ
allows one IP address to be unprotected while
others remain protected. The DMZ is located
between the Internet and an internal network’s line
of defense that is a combination of firewalls and
bastion hosts.
Typically, the DMZ contains devices accessible to
Internet traffic, such as Web (HTTP) servers, FTP
servers, SMTP (e-mail) servers, and domain name
system (DNS) servers.
Firewall
The following table provides a description of the pages available from within the
Firewall section of the Setup page.
Field Name Description
Web Filters Use this page to configure Web page filtering and
firewall protection. This page allows you to
block/allow Internet access based on keywords
and/or domain names
Event Logging Use this page to access the firewall event log and
to enter your e-mail address in order to receive e-
mail alerts related to firewall attacks by hackers