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Telnet Connection Settings

The screenshot below depicts the TELNET connection settings.  

(For more information on other session property configuration tabs, please see Session Properties.)

The following Telnet configuration settings are available to properly setup your device connection and terminal session.

Auto ConnectIf this option is enabled, then the terminal session will attempt to establish a connection immediately when opened in Indigo.
Telnet Host

The telnet server/host should be provided in this configuration field.
This entry can be an IP address, computer name, or DNS hostname.

Telnet Port

The telnet server/host port can be used if a custom telnet port must be provided.
(The default port for the Telnet protocol is port 23.)

Active Telnet Negotiation

In a Telnet connection, there are two types of data passed between the client and the server/host: actual text, and telnet negotiations for Telnet protocol specific extra features.

Indigo can use two different strategies for negotiation:

Telnet NegotiationDescription
ActiveIn active mode, Indigo starts to send negotiations as soon as the connection is established.
Passive (Inactive)In passive mode, Indigo will wait to negotiate until it first sees a negotiation from the server/host.

Indigo defaults to Active Telnet Negotiation because if both Indigo and the server/host are operating in a passive mode, then the telnet negotiation will never take place.
However, passive mode is sometimes required in order to successfully get through certain types of firewall and Telnet proxy server. If you have trouble establishing a Telnet connection through a firewall, you could try disabling active mode to see if it helps.

Telnet Connection Authentication Options

When using a Telnet connection, Indigo can provide two options for automated password authentication.  
(The Telnet protocol intrinsically supports authentication as part of the protocol.)  


Authentication Method

This option allows you to set the session authentication method. For Telnet connections, Indigo supports the following options:

Authentication MethodDescription
NoneNo authentication method is applied.
Password (connection)

Use this option to provide basic username and password credentials to the telnet server/host.
(This is a protocol based implementation, where the user credentials are negotiated as part of the telnet protocol at the time of connection.

Password (manual)

Use this option to provide basic username and password credentials to the telnet server/host.
(This is a simple software only implementation, not a communication protocol level authentication negotiation.
Indigo will send user credentials at the time of connection based on the Wait for Prompt property.)

Wait For PromptIf this wait for prompt option is enabled, Indigo will wait until the prompt text is received before sending user credentials to the connected session.
If this option is not enabled, then Indigo will automatically attempt to send user credentials when the connection is established. 
(This option is only available when using the Password (manual) authentication method.)    
UsernameThis is the user name text that Indigo will submit when attempting to authenticate.
PasswordThis is the password text that Indigo will submit when attempting to authenticate.
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