How to Create an IP Filter Profile
Create IP Filter Profiles to allow or deny connections to a host from specific IP addresses.
Results: When a connection is made to the host, the remote IP address will be checked against the filter or filters in the applied Filter Profile. Access will be granted or denied accordingly.
IP Filtering Examples
These examples will help you understand how to use the IP Filtering feature.
- Filtering conditions are read and applied line by line from top to bottom.
- For an exact IP address, define an asterisk (*) for the subnet. For example, instead of 255.255.255.255, use an asterisk (*)
- When you use an asterisk in the Address field then the subnet must be defined as (*)
IP Filtering Example 1
Allow connections from IP address 215.43.21.12 and the network 192.168.0.0, and deny all other connections.
ALLOW 215.43.21.12 (*)
ALLOW 192.168.0.0 (255.255.0.0)
-or-
ALLOW 215.43.21.12 (*)
ALLOW 192.168.* (*)
IP Filtering Example 2
Allow connections from IP address 215.43.21.12 and the network 192.168.0.0, but not from the address 192.168.0.12, and deny everything else.
ALLOW 215.43.21.12 (*)
DENY 192.168.0.12 (*)
ALLOW 192.168.0.0 (255.255.0.0)
-or-
ALLOW 215.43.21.12 (*)
DENY 192.168.0.12 (*)
ALLOW 192.168.* (*)
IP Filtering Example 3
Allow all connections, except those coming from 192.168.0.12
DENY:192.168.0.12 (*)
ALLOW:* (*)
IP Filtering Example 4
Deny all connections from the network 192.168.0.0 except for the subnet 192.168.12.0; allow all other connections.
ALLOW:192.168.12.0 (255.255.255.0)
DENY:192.168.0.0 (255.255.0.0)
ALLOW:* (*)
-or-
ALLOW:192.168.12.* (*)
DENY:192.168.* (*)
ALLOW:* (*)