> For the complete documentation index, see [llms.txt](https://help.boomerang3.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.boomerang3.com/bbo-gateway-installation-manual/bbo-web-interface/system-configuration/telnet.md).
# 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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