BlackDoor 10/100

Packet Encryptor

- Encrypt LAN to LAN Traffic -

- Secure Proprietary Information -

- Standalone Encryption Alliance -

Product Image


9" (L) x 7.3” (W) x 1.50” (H)


Encrypt Voice, Video and Data Packet Networks

The BlackDoor protects the confidentiality and integrity of Intranet and Internet Ethernet networks with the strongest commercially available cryptography. The BlackDoor Ethernet Encryptor, which supports Point to Point and Multi-point information assurance configurations with unique dynamic keys, is specifically designed for real time wireline backbones and the full spectrum of outdoor Wireless WAN technologies including: Free Space Optics, licensed and unlicensed Radios.

The BlackDoor transparently AES encrypts Ethernet networks. Ethernet Voice, Video or Data packets, that are destined for a device located on a remote network or a different local network segment, are AES encrypted at the Link, Network or Transport Layer and then tunneled, bridged or routed to the destination network. At the destination network the packets are decrypted and the original Ethernet packets are securely delivered to the destination Ethernet device.

The BlackDoor has three core modes of operation:

Black Bridge
The internal LAN segment transparently monitors all the packet traffic. Non Local Packets are encrypted above the Mac layer and bridged to the destination network.

Black Router
Remotely destined packets are encrypted above the Network layer and then dynamically or statically routed to the destination network.

Black Tunnel 
Interconnects Ethernet LANs through an IP Transparent Encrypted Tunnel. Original packets are entirely encrypted and then encapsulated into an IP packet that is forwarded to the destination network.


The BlackDoor has the horsepower to support real time full duplex packet traffic such as that required by Video and Circuit Extension Over IP. Three independent Specialized Processors: Communication, Security and Application, are optimally geared to high performance full duplex dual Ethernet packet Encryption and Decryption.

  1. Security Processor with independent encryption and decryption rings, 
  2. Communication Processor that is tightly coupled to the Network interfaces, 
  3. Application Processor that is executing a secure Operating System that has 15 years of network connectivity hardening.

Encryption Method

The Advanced Encryption Standard (AES) is utilized by the BlackDoor to protect electronic data. The AES algorithm is a symmetric block cipher that encrypts and decrypts information. AES is a FIPS approved symmetric encryption algorithm that may be used by U.S. Government organizations (and others) to protect sensitive information.

Key Management

Automated 256 bit key management configurations ensure timely key transitions and eliminate the operational and maintenance costs of managing an encrypted network with manual key distribution.


Encrypt Sensitive Intranet and Internet Ethernets

Ethernet Encryptor Diagram

The BlackDoor Ethernet encryptor meets the new security requirements and reduces overall network complexity for:

  • Department of Defense - Air Force, Army, Navy, Marines

  • National, State and Local Governments

  • Public Safety Networks

  • Homeland Security

  • Multi-Site Commercial Enterprises

  • Banking and Financial Institutions

  • Health Care Industries

  • Natural Gas & Electric Power Utility Companies

  • Transportation Agencies


Encryption Algorithm
    • AES 256-bit
    • Fully Automatic key management
Supported LAN Network Interface
    • Two 10/100BaseT Full/Half Ethernet
    • Auto negotiation or Configured Speed and Duplex
LAN Network Protocols Supported
  • Telnet TFTP Online Upgrade Capable (FLASH ROMs)
    • BlackDoor is fully operational during upgrade
    • 9" (L) x 7.3” (W) x 1.50” (H)
  • 0° to 132° F (-10° to 50°C ) operating temperature
  • Up to 90% operating humidity (non-condensing)
    • Optional Extended Temperature Range available
  • CE
  • Safety -IEC60950
  • EMC - CFR 47 Part 15 Sub Part B:2002, EN55022: 1994 + A1 & A2, EN55024, ICES-003 1997, CISPR 22 Level A
  • Telnet support with Edit and Paste Template Files
  • Console Port for Out of Band Management
  • SNMP support (MIB I, MIB II) with configured traps
    • Remote configuration, monitoring, & reset
  • 12-30 VDC, 1.0A.
  •  Locking Connector
  • Optional -48V 0.25 Amp
  • Hot Standby

Ordering Information

Chassis Slot Card: BlackDoor 10/100

Rack Mount & Power Supply Options:

BlackGate RS232 Rear
BlackGate RS232 Rear

Part No.


BlackDoor 10/100 Standalone


BlackDoor Server, Ethernet Encryptor AES Bridge or Tunnel, supports up to 20 remote BlackDoor (Server or Client) Connections


BlackDoor Client, Ethernet Encryptor AES Bridge or Tunnel, must communicate with BlackDoor Server


BlackDoor Single-Client Server, Ethernet Encryptor AES Bridge or Tunnel, supports 1 remote BlackDoor Client Connection

BlackDoor 10/100 Slot Card


BlackDoor Server, Ethernet Encryptor AES Bridge or Tunnel, supports up to 20 remote BlackDoor (Server or Client) Connections - Slot Card Version


BlackDoor Client, Ethernet Encryptor AES Bridge or Tunnel, must communicate with BlackDoor Server- Slot Card Version


BlackDoor Single-Client, Ethernet Encryptor AES Bridge or Tunnel, supports 1 remote BlackDoor Client Connection - Slot Card Version

Power Supply Options

Power Supply Options


90-220 VAC Universal International/Domestic Adapter


DUAL REDUNDANT, 90-220 VAC Adapter


Internal Power Module, -48 VDC Screw Terminals


DUAL REDUNDANT, -48 VDC Screw Terminals


WIREDC Option, +24 VDC Screw Terminals



Rack Mount Options

Rack Mount Option


Rack Mount Kit - for single 7" products (Fits both 19" and 23" racks)


2 unit 19" x 1RU Rack Mount Kit for 7" products




Right Angle Wall Mount Bracket Kit

So What's Next?


Engage Communication
9565 Soquel Drive. Aptos, CA 95003
This email address is being protected from spambots. You need JavaScript enabled to view it.
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Telephone: 1-831-688-1021
Toll Free : 1-877-ENGAGE4
Designed, Fabricated, and Assembled
in America 
Supported Worldwide