Winbox 3.12 is a specific legacy version of the MikroTik management utility used to configure RouterOS devices via a graphical user interface (GUI). Released in February 2018, this version introduced several functional improvements and workflow refinements for network administrators. Key Features and Changes in v3.12
This release focused on enhancing the "Connect" window behavior and security options:
Export Without Passwords: A new menu entry was added to allow users to export configuration files without including sensitive password data.
Improved Filtering: In the Connect window, pressing Enter now starts the filtering process if filters have been modified, rather than immediately attempting to connect to a router. Enhanced Connectivity:
Restored the ability to copy and paste files directly between different routers.
Fixed RoMON mode reconnection issues when the "Open In New Window" setting was enabled.
The Enter key now activates the connection if any connection fields are active, even if a master password has not yet been entered. winbox 312
Password Management: Updated the software to ensure old passwords are not retained if the user later unselects the "Keep-Password" option. Core Functionalities
Like other versions in the v3 series, Winbox 3.12 provides essential tools for managing MikroTik hardware:
Safe Mode: A critical safety feature that allows users to test configuration changes; if the connection is lost before saving, changes are automatically reverted to prevent accidental lockouts.
Neighbor Discovery: Scans the local network to find MikroTik devices via MAC or IP address, even if they don't have an IP assigned yet.
Real-time Monitoring: Includes a dashboard and widgets for tracking CPU usage, memory, uptime, and interface traffic. Download and Security Note
While newer versions (such as v3.40+ or v4 beta) are now available on the official MikroTik download page, users seeking the specific v3.12 executable for legacy compatibility can often find it via the MikroTik archive link. Winbox 3
Security Warning: Versions prior to v3.14 do not include certain modern security features like ECSRP key exchange or AES128-CBC-SHA encryption. It is generally recommended to use the latest stable version to ensure your administrative sessions are fully protected against man-in-the-middle attacks. 12, or do you need assistance upgrading to a newer version? WinBox - MikroTik
Live Monitoring Track traffic, CPU usage, memory, and device health in real-time.
WinBox - RouterOS - MikroTik Documentation - Support Service
It seems you're asking for a guide to Winbox on port 312.
Just to clarify: Winbox (MikroTik's GUI management tool) typically uses port 8291 (TCP/UDP) — not 312.
Port 312 is not a standard Winbox port.
Here are the most likely scenarios you're asking about: Download Winbox from MikroTik's official website
How to connect:
8291 (default) unless you changed it.To change Winbox port on router:
/ip service set winbox port=312
(Then connect using port 312 instead of 8291)
To demonstrate the power of Winbox 312, let’s walk through two essential tasks.
Bridge > Add new bridge (bridge1).Interfaces > Bridge tab. Add your ethernet ports (e.g., ether2, ether3) to bridge1.IP > Addresses > Add. Enter 192.168.88.1/24 on bridge1.Version 3.12 sits within the v3 branch of the software, which introduced several under-the-hood improvements over the v2.x predecessors:
Version 3.12 features the classic "Neo" interface—a dark grey, tabbed layout that many power users prefer over the newer flat-design interfaces. It is less resource-intensive and allows for rapid keyboard navigation without visual lag.
Once connected, here is a quick workflow for basic setup using Winbox 3.12: