LX-1 Dragsled
June 08, 2006
Occasionally we might ask for remote external access to your Dragsled in order to help diagnose a problem remotely or to update some code.
For those that are familair with the Internet, IP addresses, Firewalls etc.. this is a simple thing to do, but for most people it seems quite complex.
Ususally the IP address you see on the LCD of the Dragsled is *not* an Internet address, it's a local LAN address. This includes all addresses starting with 192.xxx.xxx.xxx, 10.xxx.xxx.xxx and a few others are is reserved for non-Internet use.
On the LCD display, there is a menu item that lets you pick from several IP addresses to use.
One of the last ones says "DHCP Client"
DHCP (Dynamic host Configuration Protocol) client means that it will get it's IP address from a DHCP server.
This is where you may need to get a knowledgeable person involved....
If this is a "HOME" high speed Internet service you are using then USUALLY it will act as a DHCP server and just give an address to the dragsled. If that works, then that's the simplest.
But there are a few possible problems that may pop-up depending on your Internet Service Provider (ISP). The most likely is that the ISP's modem is expecting the MAC address of the equipment it saw when it was first set-up. (your router or computer.)
If you are in an office environment, you will likely not be given and IP with direct Internet address. You're probably behind a firewall. You'll have to ask your LAN administrator to temporarily allow a PORT to be opened for TELNET on your firewall and have it point to the Dragsled IP address port: 23
Better yet, just give him the Dragsled and let them get in touch with us.
Another alternative is to ask a local small computer store to set this up for you temporarily at their shop.
There is a bit more background here:
http://engtech.ca/resources/2004/part_1_dragsled_communications_background
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