Network Address - Cradlepoint IBR650 User Manual

IBR650| USER MANUAL Firmware ver. 3.3.0
CRADLEPOINT
IP Filter Rules
6.4.2
An "Incoming" IP filter rule restricts remote access
to computers on your local network. "Outgoing" filter
rules prevent computers on your local network from
initiating communication to the address range
specified in the rule.
This feature is especially useful when combined with
port forwarding and/or DMZ to restrict remote access to a specified host or network range. For example, in order to host a
server you might have opened ports with a port forwarding rule that could expose your LAN to cyber attacks. With an
incoming IP filter rule, you can restrict the access to your LAN to only known devices.
 Name: Name your rule.
 Direction: ―Incoming‖ or ―Outgoing‖
 Action: ―Allow‖ or ―Deny‖
 Start Port: Use for a single port or a range of ports.
 End Port: Use for a single port or a range of ports.
 Network Address
 Subnet Mask
Use Start Port, End Port, Network Address, and Subnet Mask to
specify the ports and addresses for which the rule applies. You can
specify a range of ports or a single port (by inputting the same value in
both port fields). Similarly, the subnet mask can be used to define
either a range of addresses (i.e. 255.255.255.0) or a single address
(255.255.255.255).
Example of an IP Filter Rule: Suppose you have opened a port in your firewall in
order to run a server. Someone, Johnny, is abusing that opening, so you would like to
restrict his access. Create a rule that will deny Johnny's IP address.

Name: No more Johnny

Direction: Incoming

Action: Deny
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