Network Address Translation For Alarm Stations; Figure 11-3 Receiving Alarms From A Unit Over A Wan Or The Internet - Honeywell Rapid Eye System Administration Manual

Multi-Media Alarm Stations

Network Address Translation for Alarm Stations

Multi-Media unit,
sending an alarm.
The connection
uses a router's
outside IP address
and source port:
alarm station C -
56080, alarm station
D - 56090.
220
2. Enter the alarm station's IP address in the IP Address field. An IP Address is all that is
needed for a successful network connection.
3. Click Save and Close. In the Alarm Stations tab's Connection Method column, the
first letter of network appears in parentheses: (n), followed by the IP address used to
connect to the alarm station.
4. To finish preparing the alarm station, see
page 231.
A connection to one or many Multi-Media alarm stations, using one IP address, can be
made by using network address translation (NAT) and port address translation (PAT), a
one-to-many address translation. This is useful to connect to alarm stations through:
• A WAN
• The Internet
• Another segment of the same LAN.
Figure 11-3 Receiving Alarms from a Unit Over a WAN or the Internet
Wide area
network (WAN)
Internet Router. Map each
alarm station's source port to
its destination port plus a
READY
ALARM
HDD
LAN IP. Router interfaces:
outside IP - 162.112.99.12,
TM
inside IP - 192.168.0.1.
IP Addresses
The key is to configure a router to translate and map the Callback's source IP port. The
Network Administrator of the destination's LAN can supply a Multi SA with the outside IP
address of the internet router.
IP Port
Callbacks to alarm stations on a remote LAN are identified by the value of the Callbacks
Source IP Port, in the Add/Update Alarm Station dialog boxes shown in
alarm station on a remote LAN needs to have a different Callback value.
Making an Alarm Station Operational
Router's Router's
outside inside
interface interface
on
Multi-Media alarm
station C. Destination
Port: 10003. LAN IP:
192.168.0.78. Mask:
255.255.255.0.
Gateway: 192.168.0.1.
Multi-Media alarm
station D. Destination
Port: 10003 (same as
alarm station C). LAN
IP: 192.168.0.78. Mask:
255.255.255.0.
Gateway: 192.168.0.1.
11-4. Each
Figure