KG-175 (Taclane)

The TACLANE (KG-175) is short for Tactical FASTLANE ® and was developed by the National Security Agency (NSA) to provide network communications security on Internet Protocol (IP) and Asynchronous Transfer Mode (ATM) networks for the individual user or for enclaves of users at the same security level. The KG-175 is a low-cost, Type 1, key-agile, in-line network encryptor for deployment in Department of Defense (DOD) tactical and strategic networks. KG-175s meet the needs of users who must communicate securely over legacy networks such as the Mobile Subscriber Equipment (MSE) packet network and Secure Internet Protocol Router Network (SIPRNET), and emerging ATM networks. KG-175s provide encryption for IP datagram traffic. ATM traffic and IP datagrams are encapsulated in ATM cells to support a variety of IP, ATM and mixed network configurations. KG-175s can be used to overlay Secure Virtual Networks on top of existing public and/or private network infrastructures.
KG175 Taclane  [Classic].  The connector at the left middle permits the attachment of a fill device. At the very left is the battery compartment. (Photo courtesy of U.S.N.)

Key management includes automatic key generation via public key cryptography. TACLANE not only employs access control, but includes compromise recovery that is suitable for tactical as well as fixed network environments. It uses a cryptographic ignition key (CIK) that renders the device unusable and UNCLASSIFIED when it is removed.

Initial TACLANE deliveries were at Release 1.0. Release 1.01 started delivery in May 2000, and Release 1.1 will be delivered at the end of the 2nd QTR FY2001. Not all users will require the upgrades.The Taclane E-100 variant has the same security features as the Classic but dramatically increases throughput to 160 mbps. It is available as a new unit or as an upgrade to the Classic model. In development is a 200 mbps and a Gigabit version of the device.

KG-175 rackmount kit. (Photo courtesy General Dynamics)


Physical Characteristics

Height (in):  4.25
Width (in):   8.25
Depth (in):  16.5
Weight (lb): 14

Data Rate: ATM: DS-3 (44.736 Mbps); IP: 4 Mbps (design)

Power: 40 W, 110-220 VAC, 50/60 Hz auto-ranging or 18-36 VDC

Environmental: Operating Temperature +4°C to +50°C (+40°F to +120°F) with no warm up; -18°C
to +50°C (0°F to +120°F) with 30 minute warm up

MTBF: Ground Fixed 5,000 hrs (calculated > 12,000 using MIL-HDBK-217E); calculated >
             37,000 hrs using Bellcore/Telecordia model); Ground mobile 2,500 hrs (calculated > 4,800
             using MIL-HDBK-217E)

Shock: Able to withstand the blow from a 400 pound hammer which equals to 91G's of force on the unit.


General Dynamics C4 Systems. Procuring agency is National Security Agency (NSA).  As of March 2003, there are 20,000 units deployed in the field.

Unit Price:KG-175  DS-3/IP  Unit price  (Jan 2003) -   $US 9,950

ENQUIRIES - Any enquires regarding this product should be made directly to:

Contact: INFOSEC Team
Phone: 888-TYPE1-4-U (888-897-3148)

KG-175D front view
KG-175D rear view.
KG-175D nameplate info.
All KG-175D photos in this table via E-bay. Download image to enlarge.  Does anyone know why the KG-175D looks so different than the KG-175? Contact:


1) US Navy COMSEC web page.
2) Taclane 175 data sheet from General Dynamics dated 03/03

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Jan 25/20