D-Link DSR-250v2 Product Manual 2 - Page 78

Port Triggering, Allowed remote IPs

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Name Mode Interface Protocol Public port Forward internal IP Local port Allowed remote IPs Apply Cancel Enter the name for your rule. Select any one of the following modes: Forwarding (Inbound): If you select this mode, traffic passes from the WAN host to the LAN host for a public destination port. Translation (Outbound): It translates the traffic from a local source port number to the configured public source port number for the LAN host to the WAN host traffic. Translation (Inbound): If you select this mode, traffic passes from the WAN host to the LAN host and translates to the destination local port when the traffic is sent on the public destination port. Note: Translation (Inbound) and Translation (Outbound) options are available only when the route mode is configured as NAT on the port configuration-- WAN mode page Select the interface on which this rule will be applied. Select one of the following protocols: TCP, UDP, or TCP/UDP. Enter the port number on which the applications are running on the WAN host. Enter the LAN host IP address. For Translation (Outbound), it refers to the IP address from where the traffic will be originating. For Translation (Inbound) or Forwarding (Inbound), it refers to the IP address to which the traffic will be sent. Local port refers to the LAN host port numbers. For outbound, it means local source port, and for inbound, it means the destination local port for the LAN host. This field is available only when you select Translation (Outbound) or Translation (Inbound) mode. Note: Mapping a range of public ports to a range of local ports, the ranges must be the same length. Enter the allowed remote IPs. Allowed remote IPs are the IPs that accept to (for Translation Outbound) and from traffic (for Translation Inbound and Forwarding Inbound). Click apply to save your settings. Click Cancel to revert to the previous settings. Port Triggering Port triggering allows devices on the LAN or DMZ to request one or more ports to be forwarded to them. This feature waits for an outbound request from the LAN or DMZ on one of the defined outgoing ports and then opens an incoming port for that type of traffic. This can be a form of dynamic port forwarding while an application transmits data over the opened outgoing or incoming port(s). Port triggering application rules are more flexible than static port forwarding, which is an option when configuring forwarding rules. This is because a port triggering rule does not reference a specific LAN IP or IP range. Also, ports are not left open when not in use, thereby providing a level of security that port forwarding does not offer. Note: This section is available only when you configure the route mode as NAT on the Port configuration --WAN Mode page. The fields displayed in the Port Triggering table are as follows: Field Description

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Name
Enter the name for your rule.
Mode
Select any one of the following modes:
Forwarding (Inbound)
: If you select this mode, traffic passes from the WAN host to the
LAN host for a public destination port.
Translation (Outbound
): It translates the traffic from a local source port number to the
configured public source port number for the LAN host to the WAN host traffic.
Translation (Inbound)
: If you select this mode, traffic passes from the WAN host to the
LAN host and translates to the destination local port when the traffic is sent on the
public destination port.
: Translation (Inbound) and Translation (Outbound) options are available only when the
Note
route mode is configured as NAT on the port configuration-- WAN mode page
Interface
Select the interface on which this rule will be applied.
Protocol
Select one of the following protocols: TCP, UDP, or TCP/UDP.
Public port
Enter the port number on which the applications are running on the WAN host.
Forward internal IP
Enter the LAN host IP address. For Translation (Outbound), it refers to the IP address from
where the traffic will be originating. For Translation (Inbound) or Forwarding (Inbound), it
refers to the IP address to which the traffic will be sent.
Local port
Local port refers to the LAN host port numbers. For outbound, it means local source port,
and for inbound, it means the destination local port for the LAN host. This field is available
only when you select
or
mode.
Translation (Outbound)
Translation (Inbound)
Note:
Mapping a range of public ports to a range of local ports, the ranges must be the same
length.
Allowed remote IPs
Enter the allowed remote IPs. Allowed remote IPs are the IPs that accept to (for Translation
Outbound) and from traffic (for Translation Inbound and Forwarding Inbound).
Apply
Click
to save your settings.
apply
Cancel
Click
to revert to the previous settings.
Cancel
Port Triggering
Port triggering allows devices on the LAN or DMZ to request one or more ports to be forwarded to them. This feature waits for an outbound
request from the LAN or DMZ on one of the defined outgoing ports and then opens an incoming port for that type of traffic. This can be a form of
dynamic port forwarding while an application transmits data over the opened outgoing or incoming port(s).
Port triggering application rules are more flexible than static port forwarding, which is an option when configuring forwarding rules. This is
because a port triggering rule does not reference a specific LAN IP or IP range. Also, ports are not left open when not in use, thereby providing a
level of security that port forwarding does not offer.
: This section is available only when you configure the route mode as NAT on the Port configuration --
Note
WAN Mode
page.
The fields displayed in the
table are as follows:
Port Triggering
Field
Description