Configuring a Firewall

For each built-in server, the Firewall list shows all the addresses that are allowed to connect or are blocked:

• If an incoming address matches an Allow address (or range), the connection is allowed.
• If the incoming address matches a Deny address, the connection is dropped.
• Firewall definitions are checked against the incoming address in the order in which they appear.

Changing the order of a firewall definition

Firewall definitions are applied in the order in which they appear. You can change the order of the definitions after you have created them.

To move a firewall definition to a different position in the list:

• Click and drag the firewall definition to the new position.

Entering Address Ranges

You can enter addresses in the access control list in three different formats:

• Fully-specified IP addresses
  Example: 192.168.1.10
• Address ranges
  Example:192.168.1.1-31. This specifies any device in the range 192.168.1.1 to 192.168.1.31.
• Addresses with a "*" wildcard Each wildcard corresponds to a range of 0-255.
  Example: 192.168.1.* (equivalent to 192.168.1.1-255)
  Example: 192.168.*.* (Class B range)
  Example: *.*.*.* ("all addresses")

Tip: To deny access to certain addresses, add them at the top of the list and set the Access attribute to "Deny".

For a description of the Access Control process and the rules InterMapper uses to determine whether a user should be allowed to connect to an InterMapper server, see Controlling Access to Your Server(Pg 1).