Toshiba Magnia SG30 - Manual (Page 121)

126 Establishing an Internet Connection
Internet security and the firewall
5.375 x 8.375 ver 2.1
Interface The interface field specifies which
of the networking interfaces to
which this rule will apply. The
public (WAN) interface is the
external interface, and is the usual
interface to which rules are
applied. Select the interface from
the drop down box. External, internal, PPP dialin,
any
Destination IP This field allows you to specify
that this firewall rule will apply to
network traffic destined for a
specific IP address. Enter the IP
address in the field, or select from
the drop down box. Select either the Public IP /
Private IP of the SG30 or
input an IP address.
Field Description Possible Values
Destination
Mask Allows you to specify the network
mask for the destination IP. Four-byte representation of
the network mask for the
destination IP. (for example,
255.255.255.0)
Destination Port This field further narrows the
scope of a firewall rule to apply
only to traffic on a specific port.
Enter a port number range. For a
single port, enter the port number
in both boxes (e.g. 80, 80). Can be a single port or a
range of ports (1-65535). If
these fields are blank then a
setting of ANY port will be
used.
Source IP Allows you to specify that the
firewall rule will apply to network
traffic coming from a specific IP
address. Enter the IP address in
the field, or select it from the
drop-down list. Select either the Public IP /
Private IP of the SG30 or
enter an IP address.
Source Mask The network mask for the source
IP of the packet. Four byte representation of
the network mask for the
source IP. (for example,
255.255.255.0)
Source Port The source port for the packet. Can be a single port or a
range of ports (1-65535). If
these fields are blank then a
setting of ANY port will be
used.
Action Action to take for the packet when
it is matched. Accept or Deny