How to increase the buffer length of the ...

FortiGate

FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.

Article Id 194245

Description

This article describes that the CLI console in the FortiGate Web-Based Manager (GUI) is limited to 50 lines by default.

In older FortiOS versions this can be increased to a maximum of 9999 lines.

Newer FortiOS GUI has a preset limit of max ~100.000 lines (non-configurable).

Scope

FortiOS.

Solution

Edit the CLI console settings by selecting the edit icon at the top right corner of the console.

Increase the buffer length to the required value (additional customization is available).

These options are not available anymore in the newer (supported) versions:

From FortiOS 5.4 onwards there are no options that can be configured concerning the CLI applet (neither on the CLI itself nor within the FortiGate config).

Evolution of CLI layout throughout different FortiOS versions:

FortiOS 5.6.

CLI buffer3.png

FortiOS 6.0.

CLI buffer2.png

FortiOS 6.2.

CLI buffer.png

FortiOS 6.4.

CLI buffer64.png

FortiOS 7.0.

CLI buffer70.png

FortiOS 7.2.

CLI buffer72.png

FortiOS 7.4.

CLI buffer74.png

FortiOS 7.6.

CLI buffer76.png

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Technical Tip: How to increase the buffer length of the FortiGate GUI CLI Console

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