© Microhard Systems Inc.
224
Appendix G: Troubleshooting
__________________________________________________________________
Question:
How do I access the devices behind the modem remotely?
Answer:
To access devices behind the BulletPlus remotely, several methods can be used:
A. IP Passthrough - The BulletPlus is transparent and the connected device can be access
directly. Refer to The IP-Passthrough Appendix for a detailed example of how this may be
deployed.
B. Port Forwarding/DMZ - Individual external WAN ports are mapped to internal LAN IP’s and
Ports. See the Port-Forwarding Appendix for a detailed example.
C. VPN - A tunnel can be created and full access to remote devices can be obtained. Required
the use of multiple modems or VPN routers. See the VPN Appendix on an example of how to set
up a VPN.
_________________________________________________________________
Question:
I have Internet/Carrier access but I cannot ping the device remotely?
Answer:
Ensure that appropriates Rules have been created in the Firewall to allow traffic.
_________________________________________________________________
Question:
I’m using IP-Passthrough but the serial ports won’t work?
Answer:
When using IP-Passthrough, the Carrier IP is assigned to the device connected to the Ethernet
port, all traffic is passed through to that device. As a result serials port will not work. The only
port not being passed through is the remote management port (default port 80), which can be
changed in the security settings.
_________________________________________________________________
Question:
I’m using IP-Passthrough but the modem won’t take my Firewall settings?
Answer:
When using IP-Passthrough, the Carrier IP is assigned to the device connected to the Ethernet
port, all traffic is passed through to that device. As a result the firewall settings have no effect on
the unit, and is automatically disabled.
_________________________________________________________________
Question: Why does my modem reset every 10 minutes (or other time)?
Answer: There are a number of processes in the BulletPlus that ensure that the unit is communicating at
all times, and if a problem is detected will reboot the modem to attempt to resolve any issues:
1. Keepalive - Attempts to contact a configured host on a defined basis. Will reboot modem if
host is unreachable. Enabled by default to attempt to ping 8.8.8.8. May need to disable on
private networks, or provide a reachable address to check. Access via System > Keepalive.
3. Local Device Monitor - The BulletPlus will monitor a local device, if that device is not present
the BulletPlus may reboot. Apps > LocalMonitor.
__________________________________________________________________
Question: How do I set up VPN?
Answer: Refer to the VPN Appendix for an example.