Beijer Electronics (formerly QSI Corporation)

Manufacturer of Mobile Data and Human Machine Interface Terminals.
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 Post subject: LMHOSTS?
PostPosted: Thu Oct 16, 2008 6:45 am 
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Joined: Thu Aug 21, 2008 7:23 am
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Is there a way to emulate the behavior of an LMHOSTS file on the Treq? Corporate security won't pass our DNS through the firewall to the Treq (coming in over a cell connection) and I need to be able to resolve hostnames to addresses in a manual way.


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 Post subject: Re: LMHOSTS?
PostPosted: Tue Oct 21, 2008 12:58 pm 
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Joined: Wed Mar 08, 2006 12:35 pm
Posts: 31
Location: Salt Lake City, Utah
This can be done via a registry setting. You will need to add a registry key and value for each host name/IP address pair. For example, the following registry key and value can be used to manually resolve the some_hostname host name to 192.168.0.1.

[HKEY_LOCAL_MACHINE\Comm\Tcpip\Hosts\some_hostname]
"ipaddr"=hex(3):c0,a8,00,01

To test, save a text file with the above 2 lines to a USB memory drive. Name the file <something>.reg. Launch the program \HardDisk\bin\RegEditCE.exe, and use File, Import to import the .reg file. Start a command shell (Start, Programs, Command Prompt), then try to ping some_hostname. The TREQ should resolve the hostname to the correct IP. Note that this test assumes that ICMP ping packets are not blocked by a firewall -- test this by pinging the IP address first to test connectivity.

You can use the Registry API to create these keys and values programmatically (e.g. RegSetValueEx, RegCreateKeyEx).

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Brian Crofts

QSI Corporation

801-466-8770 x431

http://www.qsicorp.com


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