Fortress ES-520 Wireless Access Bridge


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Fortress Security System

ES520 Product Specifications

Leveraging Fortress Technologies' years of experience in developing secure network solutions for the US Government and other sensitive application environments, the Fortress Security System offers proven wireless security for the most demanding mission critical environments.

Fortress Technologies offers a flexible security platform to address the risks and vulnerabilities of wireless networking. The Fortress Security System delivers privacy, access control and policy management through a highly scalable, centrally managed system. Whether protecting deployable wireless networks, fixed wireless, mobile edge or traditional wireless LAN applications, Fortress provides the most comprehensive commercially available security solution.

Fortress Technologies allows you to secure and control all the components of your wireless network; regardless of infrastructure, vendor or evolving technologies.

Features and Performance

Backhaul Range
  • tested up to 32 miles (antenna-dependent)
Access Range
  • tested up to 2 miles (antenna-dependent)
  • up to 100 secure clients
  • AES-128, 192, 256
  • WPA2 (80211i) software upgradeable
  • Suite B software upgradeable
  • internal or external RADIUS
  • user and device
  • secure browser-based GUI, CLI or SNMP
SSID support
  • up to 4 SSIDs
  • includes 1 year of maintenance and support



  • rugged .125" aluminum
  • NEMA 4
  • mast mounting kit and weatherizing kit included
  • 2.3"H x 8.75"W x 6.6"D (5.8cm x 22.2cm x 16.8cm)
  • 3.46 lbs. (1.57 kg)
  • eight RJ-45 10/100 LAN ports with auto-MDIX
  • one RJ-45 10/100 WAN port with PoE receiver
  • one RJ-45 serial console port
  • two USB ports for external peripherals
  • one 200 mW 802.11a/b/g radio (maximum transmit power 23dBm
  • one 400 mW 802.11a radio (maximum transmit power 26dBm)
Antenna Support
  • 2 N-style external antenna connectors
Radios Modes of Operation
  • wireless access point or bridge
Power Supply
  • external AC-DC power adapter (48V), or PoE
  • polarity protection
Power Draw
  • 13W maximum
Port LEDs
  • link, activity, status, PoE
Radio LED
  • strength and association


  • convection (no fans)
Operating Temperature
  • -10 ~ 50C
  • 5 ~ 95%
Weather Resistance
  • water-resistant front panel cover plate included
  • IP56
  • lightning arrestor
Vibration, bounce & shock
  • MIL-STD 810F


Safety & Emissions
  • UL, CE, FCC
  • FIPS 140-2 level 2 submitted
Common Criteria
  • EAL 3 submitted