# Telnet
Click on “System Configuration”->”Telnet”.
A user can enable Telnet access to the BBO and define the port used by Telnet protocol.
It is recommended to disable this functionality for security reasons.
If Telnet is enabled a terminal program like Putty may be used to access its serial interface.
Enter login and password (admin/icu).
The menu is displayed.
Enter a number to see the logs.
Press Enter to return to the main menu.
Enter “q” to close the serial connection.
The only log that is useful for BBO – Boomerang communication is POST client communication selected by entering digit “2”.
The log presents the contents of POSTs sent by BBO to Boomerang.
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# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://help.boomerang3.com/bbo-gateway-installation-manual/bbo-web-interface/system-configuration/telnet.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.