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Edit LAN WAN Service
Outbound Service
This page is used to modify a previously configured firewall rule for traffic going from the LAN to the WAN. The following fields of an outbound rule can be changed:
Service Name: This is a unique name assigned to the service. The name usually indicates the type of traffic the rule covers such as ftp, ssh, telnet, ping, etc. Services not already in the list can be added on the Services page under the Security menu.
Filter: Defines an action to be taken on an enabled rule. It can be:
v Block Always: Block selected service at all times.
v Allow Always: Allow selected service to pass through at all times.
v Block by schedule, otherwise allow: Works in conjunction with a schedule defined in the Schedule 1/2/3 pages. The selected service will be blocked during the scheduled interval and will be allowed to pass through at other times.
v Allow by schedule, otherwise block: Works in conjunction with a schedule defined in the Schedule 1/2/3 pages. The selected service will be allowed to pass through during the scheduled interval and will be blocked at other times.
LAN Users: Specifies whether one or more IP addresses on the LAN will be affected by the rule. This rule will affect packets for the selected service from the defined IP address or range of IP addresses on the LAN side.
v Any: All computers on the LAN will be affected by the rule.
v Single Address: A single LAN IP address will be affected by the rule.
v Address Range: A range of LAN IP addresses will be affected by the rule.
v Group: Computers that are part of the Group defined in the Network Database will be affected by the rule (groups are defined under the Network Configuration menu, LAN Groups page, Edit Group Names link).
WAN Users: Specifies whether one or more IP addresses on the WAN will be affected by the rule. This rule will affect packets for the selected service to the defined IP address or range of IP addresses on the WAN side.
v Any: All IP addresses on the WAN will be affected by the rule.
v Single Address: A single WAN IP address will be affected by the rule.
v Address Range: A range of WAN IP addresses will be affected by the rule.
Priority: The priority assigned to IP packets of this service. The priorities are defined by “Type of Service (TOS) in the Internet Protocol Suite” standards, RFC 1349. The router marks the Type Of Service (TOS) field as defined below:
v Normal-Service: No special priority given to the traffic. The IP packets for services with this priority are marked with a TOS value of 0.
v Minimize-Cost: Used when data must be transferred over a link that has a lower "cost". The IP packets for services with this priority are marked with a TOS value of 1.
v Maximize-Reliability: Used when data needs to travel to the destination over a reliable link and with little or no retransmission. The IP packets for services with this priority are marked with a TOS value of 2.
v Maximize-Throughput: Used when the volume of data transferred during an interval is important even if the latency over the link is high. The IP packets for services with this priority are marked with a TOS value of 4.
v Minimize-Delay: Used when the time required (latency) for the packet to reach the destination must be low. The IP packets for services with this priority are marked with a TOS value of 8.
Log: Specifies whether the packets for this rule should be logged or not. To log details for all packets that match this rule, select Always. Select Never to disable logging.
For example, if an outbound rule for a schedule is selected as Block Always, then for every packet that tries to make an outbound connection for that service, a message with the packet’s source address and destination address (and other information) will be recorded in the log. Enabling logging may generate a significant volume of log messages and is recommended for debugging purposes only.
NAT IP: Specifies whether the source address of the outgoing packets on WAN should be assigned WAN interface address OR different one.
NAT single IP is on: The Interface to which the NAT IP belongs to. All the outgoing packets on WAN will be routed through the specified WAN interface only.
v WAN Interface Address: All the outgoing packets on WAN will be assigned WAN interface address.
v Single Address: All the outgoing packets on WAN will be assigned the specified IP address.
Note: This option will be available only when WAN mode is "NAT". The IP address specified should fall under the WAN subnet.
Click Apply to save the settings.
Click Reset to revert to the previous settings.
Edit LAN WAN Service
Inbound Service
This page is used to modify the previously configured firewall rule for traffic coming from the LAN to the WAN. The following fields of an inbound rule can be changed:
Service Name: This is a unique name assigned to the service. The name usually indicates the type of traffic the rule covers such as ftp, ssh, telnet, ping, etc. Services not already in the list can be are added to the Services page under the Security menu.
Filter: Defines an action to be taken on the enabled rule. It can be:
v Block Always: Block selected service at all times.
v Allow Always: Allow selected service to pass through at all times.
v Block by schedule, otherwise allow: Works in conjunction with a schedule defined in the Schedule 1/2/3 pages. The selected service will be blocked during the scheduled interval and will be allowed to pass through at other times.
v Allow by schedule, otherwise block: Works in conjunction with a schedule defined in the Schedule 1/2/3 pages. The selected service will be allowed to pass through during the scheduled interval and will be blocked at other times.
Send to LAN IP Address: Specifies an IP address and port number of a machine on the LAN which is hosting the server. Select the port number checkbox only if the server is listening on a port other than the default. For example, if a machine on the LAN side is running a telnet server on port 2000, then select the Translate to Port Number checkbox and type 2000 in the Port field. if it is listening on the default port 23, then the box can be left unchecked.
Note: This option is only available when the router is in NAT mode (see the Network Configuration menu, WAN Mode page.)

Destination: The WAN IP address that will map to the incoming server. It can either be the address of the WAN1 or WAN2 ports* or another WAN IP address. This field is only enabled under NAT mode because the router needs to map traffic coming from a particular WAN port to a LAN machine.
* Your router may have a single WAN port. Please refer to the online Reference Manual for details.
LAN Users: Specifies whether one or more IP addresses on the LAN will be affected by the rule. This field is only enabled in routing mode since the LAN is accessible only in this mode.
v Any: All computers on the LAN will be affected by the rule.
v Single Address: A single LAN IP address will be affected by the rule.
v Address Range: A range of LAN IP addresses will be affected by the rule.
v Group: Computers that are part of the Group defined in the Network Database will be affected by the rule (groups are defined under the Network Configuration menu, LAN Groups page, Edit Group Names link).
WAN Users: Specifies whether all addresses or specific IP addresses on the WAN will be affected by the rule. This rule will affect packets for the selected service to the defined IP address or range of IP addresses on the WAN side.
v Any: All IP addresses on the WAN will be affected by the rule.
v Single Address: A single WAN IP address will be affected by the rule.
v Address Range: A range of WAN IP addresses will be affected by the rule.
Priority: The priority assigned to IP packets of this service. The priorities are defined by “Type of Service (TOS) in the Internet Protocol Suite” standards, RFC 1349. The router marks the Type Of Service (TOS) field as defined below:
v Normal-Service: No special priority given to the traffic. The IP packets for services with this priority are marked with a TOS value of 0.
v Minimize-Cost: Used when data must be transferred over a link that has a lower "cost". The IP packets for services with this priority are marked with a TOS value of 1.
v Maximize-Reliability: Used when data needs to travel to the destination over a reliable link and with little or no retransmission. The IP packets for services with this priority are marked with a TOS value of 2.
v Maximize-Throughput: Used when the volume of data transferred during an interval is important even if the latency over the link is high. The IP packets for services with this priority are marked with a TOS value of 4.
v Minimize-Delay: Used when the time required (latency) for the packet to reach the destination must be low. The IP packets for services with this priority are marked with a TOS value of 8.
Log: Specifies whether the packets for this rule should be logged or not. To log details for all packets that match this rule, select Always. Select Never to disable logging.
For example, if an inbound rule for a schedule is selected as Block Always, then for every packet that tries to make an outbound connection for that service, a message with the packet’s source and destination addresses (and other information) will be recorded in the log. Enabling logging may generate a significant volume of log messages and is recommended for debugging purposes only.
Click Apply to save the settings.
Click Reset to revert to the previous settings.
 

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