Draytek Vigor2760 Series User Manual page 64

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DMZ Host - It allows a defined internal user to be totally
exposed to the Internet, which usually helps some special
applications such as Netmeeting or Internet Games etc.
When Port Forward is selected
Port redirection is usually set up for server related service
inside the local network (LAN), such as web servers, FTP
servers, E-mail servers etc. Most of the case, you need a
public IP address for each server and this public IP
address/domain name are recognized by all users. Since the
server is actually located inside the LAN, the network well
protected by NAT of the router, and identified by its private
IP address/port, the goal of port redirection function is to
forward all access request with public IP address from
external users to the mapping private IP address/port of the
server.
Protocol –Select the transport layer protocol (TCP or UDP).
Start External Port/End External Port – Specify which
public port or port range (start and end) can be redirected to
the specified Mapped Port(s) of the internal host.
Start Mapped Port/End Mapped Port – Simply specify
the private port number of the service offered by the internal
host. The End Mapped Port value will be calculated based on
the external port range and added automatically by the
router.
When PPTP /L2TP /IPsec Passthrough is selected
PPTP/L2TP/IPsec Passthrough is prepared for general users
to get more conveniences. If they want to connect the VPN
server on LAN from external interface, they can choose any
one of these types for such profile. The default values for
each type will be shown immediately whenever the type is
selected.
Protocol –Select the transport layer protocol (TCP or UDP).
Start External Port/End External Port –Specify which
public port (start and end) or port range can be redirected to
the specified Mapped Port(s) of the internal host.
Start Mapped Port/End Mapped Port –Specify the private
port number (start and end) or port range of the service
offered by the internal host.
Click it to save the settings.
Click it to remove the modification of the web page.
Click it to return to previous web page.
56 Vigor2760 Series User's Guide