Cradlepoint MBR1400 Product Manual page 80

MBR1400 | USER MANUAL – Firmware version 4.2
CRADLEPOINT
that is NOT in the specified port range.
• Port(s): Use for a single port or a range of ports. Fill in the left side for a single port.
Use Network IP, Netmask, and Port(s) to specify the ports and addresses for which the rule applies. You can specify a
range of ports or a single port. Similarly, the netmask can be used to define either a range of addresses (i.e.
255.255.255.0) or a single address (255.255.255.255).
If you leave these values blank, then all IP addresses and ports will be included. IP Source and IP Destination options
can be used to differentiate between the directions that packets go. You could permit packets to come from particular IP
addresses but then not allow packets to return to those addresses.
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.
Add IP Filter Rule
Name: No more Johnny
•
Enabled: Selected
•
Action: Deny
•
Protocol: Any
•
IP Source
Network IP: 172.22.24.160 (Johnny's IP address)
•
Netmask: 255.255.255.255 (This netmask restricts the rule to one single address).
•
Port(s): 80
•
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