telnet through com port

[Mike Brearley]

Is it possible to telnet through a com port and if so, how do I do it?

I tried telnet com1, but the connection failed. If that's the way you do
it, then I guess my device doesn't support a telnet connection through it's
com port.

--
Posted 'as is'. If there are any spelling and/or grammar mistakes, they
were a direct result of my fingers and brain not being synchronized or my
lack of caffeine.

Mike Brearley

 

[Tim Slattery]

Is it possible to telnet through a com port and if so, how do I do it?

I tried telnet com1, but the connection failed. If that's the way you do
it, then I guess my device doesn't support a telnet connection through it's
com port.

Telnet is an internet utility, it will use whatever TCP/IP stack is on
your machine to communicate. If that stack is configured to use your
com1 port, then the communication will go that way, but it will always
be TCP/IP regardless of the hardware it's traveling over.

I don't know what it is you're trying to accomplish, but I suspect you
need to try something other then telnet.

 

[Mike Brearley]

I have a device to sync our clock system in our plant to our network time.
Somehow the device has been assigned a subnet mask of 255.2555.255.255
making it so I am unable to access it through it's IP address (ethernet
port). I have a utility that can read it's settings through a com port, but
it can't change them. The only way to change the settings is by telnet'ing
to it.

Any ideas on how to access a device that has a subnet mask of
255.255.255.255? Unforunately, the company that built it, didn't think to
put a reset button on it. :-(

--
Posted 'as is'. If there are any spelling and/or grammar mistakes, they
were a direct result of my fingers and brain not being synchronized or my
lack of caffeine.

Mike Brearley

 

[Yves Leclerc]

Could you not "join" the same subnet by changing the mask to be the same?

I have a device to sync our clock system in our plant to our network time.
Somehow the device has been assigned a subnet mask of 255.2555.255.255
making it so I am unable to access it through it's IP address (ethernet
port). I have a utility that can read it's settings through a com port,
but it can't change them. The only way to change the settings is by
telnet'ing to it.

Any ideas on how to access a device that has a subnet mask of
255.255.255.255? Unforunately, the company that built it, didn't think to
put a reset button on it. :-(

--
Posted 'as is'. If there are any spelling and/or grammar mistakes, they
were a direct result of my fingers and brain not being synchronized or my
lack of caffeine.

Mike Brearley

 

[Steve N.]

I have a device to sync our clock system in our plant to our network time.
Somehow the device has been assigned a subnet mask of 255.2555.255.255
making it so I am unable to access it through it's IP address (ethernet
port). I have a utility that can read it's settings through a com port, but
it can't change them. The only way to change the settings is by telnet'ing
to it.

Any ideas on how to access a device that has a subnet mask of
255.255.255.255? Unforunately, the company that built it, didn't think to
put a reset button on it. :-(

You can use Hyperterminal instead of telnet, but I've found that the
Hyperterminal versions that ship with Win2K/XP do not transmit some
F-key presses used in some devices. If you run into that sort of thing
get a copy of Hyperterminal from a Win98 box.

Steve

 

[Thomas Lutz]

Try using the HyperTerminal program that comes with Windows to open
the COM port directly. Hyperterminal is in your Accessories folder.
When you run Hyperterminal, create a new connection and then have it
open the COM port directly instead of opening a modem connection.