User's Manual

ES520 Hardware Guide: Overview
2
1.2 The ES520
The Fortress ES520 Deployable Mesh Point is a full-featured
Fortress network device, providing strong data encryption and
Multi-factor Authentication™, including native RADIUS
authentication, to users and devices on the network it secures.
The ES520 comprises three, independent network components
that can be used alone or simultaneously in any combination:
1 Radio 1 is a dual-band 802.11a/b/g radio that can be
configured to use either the 802.11b/g band or the 802.11a
band. It can function as a wireless access point (AP),
providing secure WLAN connectivity to wireless devices
within range and as a wireless bridge or node in a mesh
network.
2 The standard equipment Radio 2 is fixed on the 802.11a
band. The ES520 can be optionally equipped with a 4.4
GHz military band Radio 2. In either case, as the higher
powered of the two radios, it would normally be the first
choice for the backhaul function in a mixed wireless Mesh
Point/WLAN deployment.
NOTE: The internal
LAN does not sup-
port NAT (network ad-
dress translation).
3 The eight RJ-45 10/100 Mbps Auto-MDIX Ethernet ports
(labeled
1-8) are interfaces for the internal LAN switch.
The ES520 can function either as an 802.3af power-over-
Ethernet (PoE) powered device (PD) or as an 802.3af power
sourcing equipment (PSE) device. It functions as a PD when
powered solely through its WAN port. It functions as an 8-port
PSE switch when powered from local 48V power (from either
the AC adapter or the 4-pin input). The ES520’s 48V power
supplies are highly isolated to meet PSE standards and will
provide up to 36W of total PSE power to remote devices.
1.2.1 Hardware Models
CAUTION: Use of
4.4 GHz radios is
strictly forbidden out-
side of U.S. Department
of Defense authority.
You can identify whether the ES520 is equipped with a
standard 5 GHz 802.11a radio (as Radio 2) or the optional 4.4
GHz military band radio by the full model number.
 ES520-35 - standard equipment
 ES520-34 - military option
The 4.400 GHz–4.750 GHz frequency range is regulated by
the United States Department of Defense, rather than the
Federal Communications Commission (FCC). FCC markings
are therefore not applied to the ES520-34 chassis and there is
no FCC ID associated with these products.
Each model is equipped with the appropriate antenna port
(
ANT2) for the type of radio installed as Radio 2.
The two ES520 models are otherwise identical.