Advantech EKI-6310GN, User Manual

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67 EKI-6310GN User Manual
Chapter 8
A
pplication
Rules
A
nd
Firewall
MAC/IP/Port Filtering : Enables or disables MAC/IP/Port Filtering. (Default: Disable)
Default Policy : When MAC/IP/Port Filtering is enabled, the default policy will be
enabled. If you set the default policy to "Dropped", all incoming packets that don't
match the rules will be dropped. If the policy is set to "Accepted," all incoming pack-
ets that don't match the rules are accepted. (Default: Dropped)
MAC Address : Specifies the MAC address to block or allow traffic from.
DIP : Specifies the destination IP address to block or allow traffic from.
Protocol : Specifies the destination port type, TCP, UDP or ICMP.
Destination Port Range : Specifies the range of destination port to block traffic from
the specified LAN IP address from reaching.
Source Port Range : Specifies the range of source port to block traffic from the spec-
ified LAN IP address from reaching.
Action : Specifies if traffic should be accepted or dropped. (Default: Accept)
Comment: Displays a useful comment to identify the filter rules
8.2 Virtual Server
Virtual Server (sometimes referred to as Port Forwarding) is the act of forwarding
traffic from one network node to another based on received protocol port number.
This technique can allow an external user to reach a port on a private IP address
(inside a LAN) from the outside through a NAT enabled router.
Figure 8.3 Virtual Server
Virtual Server : Selects between enabling or disabling port forwarding the virtual
server. (Default: Disable)
IP Address : Specifies the IP address of a server on the local network to allow exter-
nal access.
Private Port : The protocol port number on the local server.
Public Port : The protocol port number on the router's WAN interface.
Protocol : Specifies the protocol to forward, either TCP, UDP, or TCP&UDP.
Comment : Enter a useful comment to help identify the port forwarding service on the
network.