CHAPTER-3
D-Link GLB-802C ADSL2+ Router User Manual
23
•
Private/Public/DMZ Default Action:
This setting specifies a default action to be taken (Accept or
Deny) on private, public interfaces when they receive packets that
do not
match any of the filtering
rules.
•
A
public
interface typically connects to the Internet. PPP, EoA, and IPoA interfaces are typically
public. Packets received on a public interface are subject to the most restrictive set of firewall
protections defined in the software. Typically, the global setting for public interfaces is
Deny
, so
that all accesses to the LAN initiated from external computers are denied (discarded at the public
interface), except for those allowed by a specific IP filter rule.
•
A
private
interface connects to the LAN, such as the Ethernet interface. Packets received on a
private interface are subject to a less restrictive set of protections, because they originate within
the network. Typically, the global setting for private interfaces is
Accept
, so that LAN computers
have access to the ADSL/Ethernet routers' Internet connection.
b. Creating IP Filter Rules
To create an IP filter rule, various criteria are set that must be met in order for the rule to be invoked.
Use these instructions to add a new IP filter rule.
•
On the IP Filter Configuration page, click Add.
