Titan Electronics Inc NETCOM423 Manuel D’Utilisation
5.2.7.3.
NetCom Detection through SOHO Firewall
Now open the NetCom Manager as in section 5.2.6 above, and click the
“Add” button. You again get the NetCom Manager Server Settings
dialog. But now you have to select the panel named “Firewall”.
“Add” button. You again get the NetCom Manager Server Settings
dialog. But now you have to select the panel named “Firewall”.
Check the Option “Enable Firewall”, and enter the IP-Address of the
router in the “Address” field. In the field “Port” enter the target port for
the SNMP configuration. From the Virtual Server example above this is
port 8161. Since there is no configured VSrv for Logging, ignore this
field. Click the button “Verify” to have the NetCom Manager contact
the router. This is a directed request, so there is no problem with
broadcasts. Some ISP will block the SNMP protocol, which typically
means they do not transport data for 161/udp to their customers (this is
the first reason why port 8161 was used in the example). The router will
transfer the request to UDP-Port 161 on the NetCom, which is the port
for SNMP. The NetCom will answer the request, and send it out to your
computer. The NAT function in the router will exchange the source IP
of the data by its own public value, so the NetCom Manager will see the
router in the “Address” field. In the field “Port” enter the target port for
the SNMP configuration. From the Virtual Server example above this is
port 8161. Since there is no configured VSrv for Logging, ignore this
field. Click the button “Verify” to have the NetCom Manager contact
the router. This is a directed request, so there is no problem with
broadcasts. Some ISP will block the SNMP protocol, which typically
means they do not transport data for 161/udp to their customers (this is
the first reason why port 8161 was used in the example). The router will
transfer the request to UDP-Port 161 on the NetCom, which is the port
for SNMP. The NetCom will answer the request, and send it out to your
computer. The NAT function in the router will exchange the source IP
of the data by its own public value, so the NetCom Manager will see the
Image 56: NetCom Manager Firewall Panel
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NetCom 123 WLAN, 423 WLAN,