ZyWAN User Manual
Configuring the ZyWAN
© 2008 Arcom Issue D
66
Field
Explanation
Optional fields:
The following optional fields configure the firewall to filter
allowed incoming connections to the ZyWAN.
Permitted Source Port
Range
Enter the range of source port numbers allowed for the
incoming connection. Normally source ports are randomly
assigned, so this field should only be used when the
source port is specified.
Permitted External
Network
Enter the numeric IP address, or range of addresses,
which is the source of the connection to the ZyWAN.
Each of the four fields must be a number between 0 and
255. For instance, entering an IP address network of
172.16.11.0 limits incoming connections from addresses
172.16.11.1 through 172.16.11.255.
Permitted MAC Address
Enter the MAC address, in hexadecimal format, of a
specific computer which is allowed to make a connection
to the configured
Inbound Port
.
Enable Port Forwarding
Select
Yes
if you wish to forward individual IP ports. If a host connection comes in on
one network interface at a given port, its communication is redirected to the IP address
and port number on another of the ZyWAN interfaces.
Note: When forwarding a port number from one
interface to another, there must also be a NAT rule
created on the
Networking
page, from the source IP
network to the destination interface.