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6193-3201
IP Address Filter Configuration:
Add Entries
Enter the details of IP traffic to be added to the
list. Protocols ARP, ICMP, TCP and UDP may be
selected. Other IP protocols may be selected
provided the IP protocol number within packets
is known. TCP and UDP traffic may be also lim-
ited to specific port numbers.
Delete Entries
Check the delete box alongside entries selected
for removal from the list. Alternatively, check the
enable box alongside entries if you want to make
the rule active.
Whitelist or Blacklist
Check the box to make the list a whitelist. This
will only allow traffic described in the list to
be sent over the radio link. All other traffic is
blocked unless it is present in a MAC whitelist.
Uncheck the box to make the list a blacklist. This
will ban all traffic described in the list from being
sent to the module or over the radio link.
Apply Changes
Update settings.
Apply Changes and Save
Update settings and save to non-volatile memory.
NOTE: When configuring a TCP filter it is often desirable to also configure both an ARP
and an ICMP filter for the same IP Address range. The ARP filter is required whenever
the sending device does not have a fixed IP to MAC Address translation table entry (i.e.
whenever the device may need to send an ARP request to determine the MAC address
of a device with a known IP Address). An ICMP filter is needed to allow/disallow “pings”.
3.12 Serial Port Configuration
The RM-90 has an RS-232, and RS-485 port for serial communications. These ports may
be used for different purposes. The RM-90 offers three different serial functions which
are PPP server, Serial Gateway, and Modbus TCP to RTU server.
3.12.1 RS-232 PPP Server
The RM-90 can be used as a PPP Server to connect the wireless Ethernet system to
serial devices via the RS-232 or RS-485 serial ports.
PPP Server enables a network connection to the RM-90 over a serial cable. This is much
like dial up internet. The maximum serial data rate is 38.4Kb/s. Hardware or Software
flow control may be selected.
With minimal configuration on the PC, you may use Dial up networking in Windows XP
to connect to the network via the serial port.
For the RM-90, users must configure the local IP address for the RM-90 and the remote
device IP address. Some care must be taken in selecting these IP addresses.
If you wish to use routing over this serial network connection, then the IP addresses selected
must not lie on Wireless or Wired Ethernet networks already configured into the device. You
must ensure they set routing rules appropriately for devices either side of the network.
