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For use with 47989, 47901
With the Lindy RJ-45 Port Blocker Key, the user can quickly block open network ports and easily prevent users from connecting cables, devices or inserting foreign objects without permission.
This helps protect against unauthorised access to a network or system, as well as preventing unintentional or malicious damage to ports. It can also act as a visual cue, showing inactive or disconnected ports, ideal for use in schools, office or other public sector environments.
The semi-permanent RJ-45 Port Blocker is made up of a moulded plastic blocking cap that plugs securely into the RJ-45 port with a special insertion key. The blocker latches into the RJ-45 just as a network cable would and remains in place until removed using the insertion key.
To use, simply attach a blocker to the key and plug it into the port. Hold the blocker in place and pull away the Key. To remove simply insert the Key back into the blocker until it clicks and pull it away.
Security Note: The Port Blockers will only act as a basic physical & visual deterrent to tampering. It will not prevent a determined attacker, intent on gaining physical access to a RJ-45 port.
Please Note: These Port Blockers are not compatible with the previous generation.
Please note: This key is only compatible with the corresponding colour of port blocker.
Physical Properties
Miscellaneous
Package Contents
Purchasing Information
SECTION DIVIDER LINE
SECTION 1 - HERO IMAGE
SECTION 2 - HERO HEADLINE & SUBLINE
SECTION 3 - INTRO TEXT
Block Unused Network Ports to Prevent Unauthorised Access
The Lindy RJ45 Port Blocker provides a simple, effective way to physically secure unused Ethernet ports across IT and AV networks. Ideal for switches, patch panels, wall sockets, and exposed endpoints, these blockers help prevent the unauthorised connection of network cables, rogue devices, or foreign objects.
Whether used to enforce network security, indicate inactive ports, or protect against accidental damage, the Lindy RJ45 Port Blocker is a fast, scalable solution for IT administrators, AV integrators, and facilities managers. Each blocker uses a secure latching mechanism – similar to a standard RJ45 plug – and can only be removed using a matching colour-coded key.
Available in Black, Orange, Green and Yellow for differentiated access control, with additional keys and blocker packs available separately.
Note: keys are colour-specific and only compatible with blockers of the same colour.
SECTION DIVIDER LINE
SECTION – COLOR VARIANTS GRID
SECTION DIVIDER LINE
SECTION 4 - AT A GLANCE
Physical Network Access Control
Prevents users from connecting unauthorised devices
Visual Deterrent
Communicates clearly that access is restricted
Quick & Easy to Use
Tool-free deployment, install or remove in seconds
Colour-Coded Key System
Keys only work with matching-colour locks for controlled access
Low Maintenance, High Scalability
Ideal for large rollouts with minimal overhead
RJ45 Latching Design
Mimics the clip action of real connectors for a secure hold
SECTION DIVIDER LINE
SECTION 5 – HOW IT WORKS
SECTION DIVIDER LINE
SECTION 8 - TYPICAL SECTORS
SECTION DIVIDER LINE
SECTION 9 - APPLICATIONS
Education
Prevent students from tampering with wall sockets or IT equipment.
Retail & Public Terminals
Prevent tampering or network intrusion by securing exposed Ethernet ports on kiosks, digital signage, and POS systems.
Corporate IT
Protect vacant switch ports and patch panels in data centres or server rooms.
Government / Defence
Add a physical security layer to systems handling sensitive or classified information.
Libraries / Shared Workspaces
Block unauthorised connections in public computing environments.
Healthcare & Labs
Protect equipment in clinical environments from unauthorised connections.
SECTION DIVIDER LINE
SECTION 10 - SUMMARY / CONCLUSION
As network security becomes ever more critical, Lindy RJ45 Port Blockers provide a no-nonsense, highly scalable first line of defence. Whether protecting public spaces, AV hardware, or core network infrastructure, these blockers are a simple way to take control of your ports.
Available in multiple configurations to suit different needs – from full kits to additional lock packs. Choose the option that fits your deployment (orange colour variant shown as example):
RJ45 Port Blocker Kit
4x Locks, 1x Key
RJ45 Port Blocker
1x Key Only
RJ45 Port Blocker
20x Locks Only
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