Draytek Vigor2760 User Manual page 102

Start Mapped Port/End Mapped Port – Specify the port
number of local hosts. Type the port number for Start
Mapped Port. The End Mapped Port value will be calculated
based on the external port range and added automatically by
the router.
When Port Redirection 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.
Double click the setting display line to open the following
dialog:
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) of the hosts can be
redirected to the specified Mapped Port(s) of the internal
hosts.
Start Mapped Port/End Mapped Port – Specify the port
number of local hosts. Type the port number for Start
Mapped Port. 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.
Simply move the mouse cursor to the drop down list / the
Vigor2760 Series User's Guide
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