Comtrend Corporation NexusLink 5631, Руководство пользователя

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Incoming IP Filtering:
Helps in setting rules to ACCEPT packets from the WAN interface. By default all
incoming IP traffic from WAN is Blocked, if the Firewall is Enabled. By setting up
one or more filters, particular packet types coming from the WAN can be Accepted.
Filter Name:
User defined Filter Name.
Protocol:
Can take on any values from: TCP/UDP, TCP, UDP or ICMP
Source IP Address/Source Subnet Mask: Packets with the particular "Source IP
Address/Source Subnet Mask" combination will be accepted.
Source Port: This can take on either a single port number or a range of port
numbers. Packets having a source port equal to this value or falling within the range
of port numbers (portX : portY) will be accepted.
Destination IP Address/Destination Subnet Mask: Packets with the particular
"Destination IP Address/Destination Subnet Mask" combination will be accepted.
Destination Port: This can take on either a single port number or a range of port
numbers. Packets having a destination port equal to this value or falling within the
range of port numbers(portX : portY) will be accepted.
The WAN interface on which these rules apply needs to be selected by the user.
Examples:
1. Filter Name : In_Filter1
Protocol : TCP
Source Address : 210.168.219.45
Source Subnet Mask : 255.255.0.0
Source Port : 80
Dest. Address : NA
Dest. Sub. Mask : NA
Dest. Port : NA
Selected WAN interface: mer_0_35/nas_0_35