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6193-5201
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 limited to specific port num-
bers.
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”.
3.13 Serial Port Configuration
The RM-240 has an RS-232, and RS-485 port for serial communications. These ports may
be used for different purposes. The RM-240 offers three different serial functions which
are PPP server, Serial Gateway, and Modbus TCP to RTU server.
3.13.1 RS-232 PPP Server
The RM-240 can be used as a PPP Server to connect the wireless Ethernet system to
serial devices via the RS232 or RS485 serial ports.
PPP Server enables a network connection to the RM-240 over a serial cable. This is much
like dial up internet. The maximum serial data rate is 115.2 kbit/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-240, users must configure the local IP address for the RM-240 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