How To Telnet Windows Server 2008
The Server service is what responds to a Telnet connection, so it volition need to be running on any machine you are trying to connect to.
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As I thought.....
I am working with a programmer that insist that it does not. He has done 100's of these installation and never have they had this issue.
According to them they need telnet to exist able to communicate on Port 6999....
To connect to the server I needed to enable the Telnet Server Service.
After doing then I attempted to configure the server to listen on port 6999.
Hither is the error I received:
cmd - tlntadmn config port=6999 - Invalid Value. Specify a positive number less than 1024 for Port Choice.
Below is from Microsoft Documentation:
port= IntegerValue
Sets the Telnet port. Yous must specify the port with an integer smaller than 1,024.
The visitor is insisting that we are not configuring the server correctly. I am totally at a lost here.
Management thinks highly with the company and is all over us to get information technology right.
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Tin can yous exam telnet on a lower port, to ensure it works?
Is their connection to port 6999 coming from outside? If then you should exist able to accept it at your firewall and have information technology routed to whatever port you want before hitting the server.
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No Telenet source and destination resides on the same stop point.
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It does work using default port.
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Might help if we knew what the software connectedness is going to do.
But (this is non aimed at you Mike) it's 2015, who the ʄᴝᴐʞ uses telnet in 2015‽
Your management might exist impressed simply I'thousand not.
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I would suggest referring these people to this MS article which clearly states the 1024 port limit.
https://technet.microsoft.com/en-us/library/cc772789%28WS.10%29.aspx#BKMK_SETPORT
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Telnet is often used as a tool to see if a service is answering on a sure port - similar to exam remote desktop, SMTP services, etc. It doesn't crave the telnet server be installed for that - the service in question is what answers the telnet client on any port.
I wonder if that is what they are talking about and are merely using telnet to see if the port is answering on the server or through your firewall. ?
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Telnet is frequently used as a tool to see if a service is answering on a certain port - similar to test remote desktop, SMTP services, etc. It doesn't require the telnet server be installed for that - the service in question is what answers the telnet client on whatever port.
That's a good signal. If they accept their own telnet service running information technology could be sent to whatever they want. I hadn't thought virtually that.
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Leave it at the default port, every bit LarryG said above and in your router forrad whatever port they want to 23 on the server.
Let us know what kind of router you are using and I'm sure someone tin provide an instance if you need i.
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Merely why are they wanting to use an unsecured protocol? This bothers me a trivial. Not to say the port itself is the problem, but why wouldn't you desire to encrypt any traffic you are going to pass for this? Forwarding the port on the router seems like the just option, but I wouldn't forwards a random port to an unsecured protocol just because any visitor say's "this is the way it works".. I would question the procedures of the company your employing given that SSH has or should accept replaced telnet years agone. Personally I would demand an in-depth explanation of why they crave information technology this manner, regardless of what direction thinks. At least at that indicate I could justify leaving that security hole in the network at managements request. Equally long as you document the entire process you lot should be covered.
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Let united states of america know what kind of router you are using and I'chiliad sure someone tin provide an example if you demand 1.
OP said it's local so there would exist no router interest.
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OP - are y'all able to check with support to find out if they are running their ain service and if that's what they are trying to accept you connect to / exam with?
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accept yous tried telnet ip accost 6999, then if the IP is 192.168.0.1, and so telnet 192.168.0.1 6999
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Well this is the response I got from the programmer:
We don't use telnet as a exam tool but as the actual method of sending outbound calls, and it is absolutely necessary to have telnet working (i.eastward. non blocked) on the server, simply like we exercise for dozens of other installations.
Delight continue to investigate why telnet would be blocked or somehow not immune on the server.
And then I am at a lost here.........
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Is there software installed and declining to piece of work? Or are you simply testing things right now?
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It sounds like they are using telnet as a transport mechanism for their awarding. If this is the instance, all you lot should have to do is unblock whatsoever port they are using on any firewall betwixt point A and bespeak B. Their application handles everything from there. Windows Telnet Server doesn't come into play hither.
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Source and Destination are on the same end point. Firewall is disabled on the endpoint.
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Well this is the response I got from the programmer:
We don't utilize telnet as a test tool only as the actual method of sending outbound calls, and it is absolutely necessary to have telnet working (i.e. not blocked) on the server, just like we do for dozens of other installations.
Please continue to investigate why telnet would exist blocked or somehow not allowed on the server.
So I am at a lost hither.........
This programmer needs a kick upwardly the rear for his lack of helpfulness.
Is the application installed on the system?
What ports does information technology need admission to? What ports does it register for its own apply?
What is port 6999 used for?
Is the application calling itself on port 6999 on the aforementioned system?
The lack of understanding on how the app works and how it communicates with itself or other systems is hindering finding a solution.
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Tell me about, just constitute out they knew virtually this issue during the BM phase (Earlier Me) near a year ago!....
:)
Yet now its time to go live in 30 days and it has go my event......
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anybody thanks for your input.......The SRC and DIST are on the aforementioned endpoint. No Os or Hardware firewall, no AV.....
Its a VM and every bit far routing thru the default port and route it back on 6999, as long as the SRC and DIST are on the same endpoint i can see this working......
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Odd. If the app is installed then run
and see if yous can come across something similar 127.0.0.1:6999 as a local address in a Mind state.
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Source: https://community.spiceworks.com/topic/1139523-telnet-windows-2008r2
Posted by: aycockdiestlyped.blogspot.com

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