Problem: Unable to Proxy through NetGuardian to Another Device

Platform: NetGuardian

Establishing a proxy connection to a device through the NetGuardian allows you to quickly access that device from a remote location. Setting up a proxy connection involves just a few quick steps. Use the following "techno knowledge" paper to troubleshoot common connection issues.

This "techno knowledge" paper can help you if:

Quick Reference Chart
flow chart
(For more details, review the Troubleshooting Checklist below)

Troubleshooting Checklist

port 3000
To view or change your current port configuration, locate "Proxy Base" field on the "Ports" tab of your NetGuardian configuration software. NOTE: You must write the configuration file from your PC to the NetGuardian before any changes will take effect.
If you are attempting to Telnet to the correct port and still have a problem, proceed to the next step:

Windows Command Prompt

windows command prompt
In the Command Prompt window, type "Telnet", the NetGuardian's IP address, and "2002". Press Enter. password
If the connection is successful, you will be prompted for a password (default password is "dpstelecom").


Create a new connection by entering the NetGuardian's IP address and port number 2002. hyperterminal password
If the connection succeeds, enter a password (default password is "dpstelecom") to log on. telnet fail
If the connection attempt fails, please review "Unable to Telnet to NetGuardian - Techno Knowledge Paper" for further assistance data port
After entering your password, press 'P' to see a list of available ports.
Select the desired port from the list.
If the port is not listed, another device is using the port.
If this proxy connection fails, skip ahead to "Check the baud rate and format".
If this proxy connection is successful, proceed to the next step:

prot type
On the "Ports" tab of your NetGuardian configuration software, set the port's type to the appropriate setting.
If you are still unable to proxy to your other device through the NetGuardian, check for firewall issues.

Locate these lights on the front of the NetGuardian debug filter
If you are not at the NetGuardian's location, open a second Telnet connection and press 'D' led data
Press 'l' (lowercase) to see the current status of the front panel LEDs. ('-' is off, 'G' is green, 'R' is red)

led 2
Proxy to the desired port and press a key. The corresponding light should flash green.
If a different light turns green, check the NetGuardian database for a configuration issue.
If the correct light flashes green, short pin 2 to pin 3 on the data port connector and repeat the test.
led 3
Repeat the test by pressing a key. The light should flash green, then red. On your PC, you should see an echo of the keys that you type.
If you still cannot proxy to an external device through the NetGuardian, proceed to the next step:

blinker box
Use a blinker box to test pin states.

If you remain unable to proxy to an external device through the NetGuardian, please contact DPS Telecom Tech Support.

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