Digi CM - Manual (Page 62)

Configuring Network IP Filtering
62 Chapter 7
It is also possible to enable or disable specific services of the Digi CM:
Telnet console (TCP/IP port 23)
SSH console (TCP/IP port 22)
Web configuration (TCP/IP port 80)
Interface - The interface is the name of the network interface via which a packet
is received. It can be one of these three values:
eth0 : the default Ethernet interface of the Digi CM
eth1 : the secondary interface added by using a PC card or wireless card
all : both interfaces
Option - The Option determines that this rule will be applied to the IP address/
Mask specified or to its inverse -meaning the rule will be applied to all except
those specified.
Normal : applied to the hosts included
Invert : applied to the hosts excluded
IP address/Mask - The 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
Port - A TCP/IP Port on the Digi CM that other hosts try to access. The port can
be specified using a single value or a range of ports in the form of: port1:port2,
where port1 defines the lowest port and port2 the highest port.
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