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Configuring Security and Authentication

Chapter 8 75

Option

- Determines that the rule will be applied to the IP address/Mask

specified or its inverse; that is, the rule will be applied to all except those

specified.

Normal: applied to the hosts that are included

Invert: applied to the hosts that are excluded

IP address/Mask - Specifies the host range by entering base host IP address

followed by “/” and subnet mask. The host range can be one of the following

scenarios by changing the value:

• Only one host of a specific IP address

• Hosts on a specific subnet

• Any host

Protocol - - The protocol that is being accepted on or dropped from the port:

•TCP

•UDP

• ICMP

Port - - A TCP/IP port on the Digi CM unit that other hosts try to access. You

can specify either one port, using a single value, or a range of ports in this form

: port1:port2

where

port1 defines the lowest port and port2 the highest port.

Chain rule - Determines whether access from the hosts is allowed:

ACCEPT: Access allowed

DROP: Access not allowed

To add a new IP filtering rule, enter the values for the parameters and click the

Add button on the right side of the table.

To remove a rule, click the Remove button.

After you finish editing the table, save the settings to flash:

• To save your changes, use the Save to flash button.

• To save and apply your changes, use the Save & apply button.

Specified host range Input format

Any host 0.0.0.0/0.0.0.0

192.168.1.120 192.168.1.120/255.255.255.255

192.168.1.1 ~ 192.168.1.254 192.168.1.0/255.255.255.0

192.168.0.1 ~ 192.168.255.254 192.168.0.0/255.255.0.0

192.168.1.1 ~ 192.168.1.126 192.168.1.0/255.255.255.128

192.168.1.129 ~ 192.168.1.254 192.168.1.128/255.255.255.128

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Digi CM Betriebsanweisung Seite 75