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   Author  Topic: Seeking Serial Port Hunt Group Solution  (Read 406 times)
Stable77
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Seeking Serial Port Hunt Group Solution
« on: Jan 9th, 2024, 5:29pm »
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I'm looking for a solution that will allow users to telnet, SSH, or raw serial port, connection to an IP-based head-in server that will redirect those connections in a hunt-group based on pre-configured raw serial ports on a separate destination server.  <attach diagram here>
 
Diagram:  https://ibb.co/Sd5ZrGG
 
It doesn't seem that I can attached a simplified diagram here, but in essence, a user would telnet, SSH, or raw port connect to my destination address (Windows server) from the Internet.  That Win11 server would then redirect the connections to another server pre-configured with listening serial ports 5001-5032 in a hunt group, selecting the next available unoccupied port.  If a user disconnects, then that port will be reset & available to the next caller, if it is the lowest unused port at the time.
 
Thanks,
Stable
 
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Sergey_Jarovski
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Re: Seeking Serial Port Hunt Group Solution
« Reply #1 on: Jan 10th, 2024, 10:33am »
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Hi,
 
Thanks for the interest in our product.
I am glad to assist you.
 
In my opinion the best scheme for you is:
Serial port server (with connected serial devices) - Internet router (with port forwarding) - PCs with Serial Port Redirector installed (as telnet/raw clients):
https://www.fabulatech.com/serial-port-redirector.html
https://www.fabulatech.com/serial-port-redirector-download.html
https://www.fabulatech.com/serial-port-redirector-help/
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Sergey Jarovski

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Stable77
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Re: Seeking Serial Port Hunt Group Solution
« Reply #2 on: Jan 10th, 2024, 10:03pm »
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Thanks for the quick response. I downloaded the trial version, but that doesn't really accomplish what I'm trying to do.  There's no "hunt group" functionality, there's no protocol conversion from an originating Telnet or SSH connection to the designated Raw port assignment to the destination server, and there's no native inbound terminal services.
 
As an example scenario, I'd like to be on the Internet, telnet or SSH to a public addressed server at x.x.x.x for instance, have that connection accepted as a Telnet or SSH client automatically as a client, and have the connection passed on to an internal server at address y.y.y.y via a designated raw serial port assignment value.  In my example above in the original message, my server y.y.y.y is listening on ports 5001-5032 for any inbound serial connections.  Each of these 32 ports would be in a hunt group, handling any of a total 32 inbound connections automatically, based on next available open port.  Once that, or any, connection is terminated, that serial port would be available again for the next "caller" session.
 
Your Serial Port Redirector requires I designate a COM port to connect to manually natively from the server itself.  There's no automated terminal services connectivity, and no "hunt group" port functionality, as described above.
 
Any other suggestions or solutions?
 
Thanks!
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Sergey_Jarovski
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Re: Seeking Serial Port Hunt Group Solution
« Reply #3 on: Jan 11th, 2024, 10:34am »
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Hi again,
 
Regarding converting from telnet/ssh to raw. I don't know of any sw with such functionality.
I think you should use the following pairs:
telnet server on serial device server - telnet client in SPR;
raw server on serial device server - raw client in SPR.
 
Regarding "Your Serial Port Redirector requires I designate a COM port to connect to manually natively from the server itself".
In my opinion, you can write your own app to interact with router TCP ports and create/delete virtual client telnet/raw serial ports in SPR. The following scheme:  
1) configure 32 serial ports as telnet/raw servers on serial device server (local IP and TCP ports are constant values);
2) configure port forwarding on Internet router (this is a constant configuration);
3) install Serial Port Redirector on Windows PC/VM, monitor the availability of TCP ports of Internet router,  
create/delete a virtual client telnet/raw serial ports by app as needed.
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Sergey Jarovski

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