Netopia 435 Reference Manual page 163

7-30 Netopia ISDN Router Reference Guide
The results of combining filter set modifications can be difficult to
predict. It is recommended that you take special care if making more
than one modification to the sample filter set.
Trusted host. To allow unlimited access by a trusted remote host with
the IP address a.b.c.d (corresponding to a numbered IP address such
as 163.176.8.243), insert the following input filter ahead of the
current input filter 1:
Enabled: Yes
Forward: Yes
Source IP Address: a.b.c.d
Source IP Address Mask: 255.255.255.255
Dest. IP Address: 0.0.0.0
Dest. IP Address Mask: 0.0.0.0
Protocol Type: 0
Trusted subnet. To allow unlimited access by a trusted remote subnet
with subnet address a.b.c.d (corresponding to a numbered IP address
such as 163.176.8.0) and subnet mask e.f.g.h (corresponding to a
numbered IP mask such as 255.255.255.0), insert the following
input filter ahead of the current input filter 1:
Enabled: Yes
Forward: Yes
Source IP Address: a.b.c.d
Source IP Address Mask: e.f.g.h
Dest. IP Address: 0.0.0.0
Dest. IP Address Mask: 0.0.0.0
Protocol Type: 0