StealthWatch FlowSensor

Identify the applications in use throughout your network for improved network and security troubleshooting. Obtain valuable visibility into virtualized infrastructure.

The StealthWatch FlowSensor uses a combination of deep packet inspection (DPI) and behavioral analysis to identify applications and protocols in use across the network -- no matter if they are plain text or use advanced encryption and obfuscation techniques. It also gathers packet-level performance statistics at a fraction of the cost of traditional probe-based devices, playing a key role in troubleshooting both security incidents and application performance problems. Additionally, the FlowSensor VE (Virtual Edition) enables operators to see the same detailed traffic statistics for their virtual networks as they can for their physical environments, eliminating dangerous network blind spots.   

Application Performance Monitoring

Providing true Layer 7 application visibility, the FlowSensor gathers application information, along with packet-level performance statistics, to provide valuable security context for troubleshooting a wide range of issues. The FlowSensor recognizes more than 900 application variants and their classifications, including business-critical, peer-to-peer, social media and mobile applications, just to name a few. This advanced insight is invaluable for determining whether an issue stems from an application, the network itself, or from a security incident. Lancope also provides URL information in flow records generated by the FlowSensor. Previously unavailable from most flow sources, URL data enables administrators to see exactly which web sites users are going to, as well as the file path, to more easily identify which applications are causing performance or security problems. 

Virtual Visibility

Because virtual-machine-to-virtual-machine (VM2VM) communications inside a physical server cannot be monitored by traditional network and security devices, this lack of visibility complicates problem identification and resolution. For virtual environments with limited system resources, the FlowSensor VE (Virtual Edition) enables operators to see the same detailed traffic statistics for their virtual networks as they can for their physical environments, effectively eliminating the blind spots associated with virtualized infrastructure. Deployed on a VMware ESX host, the StealthWatch FlowSensor VE captures vital traffic statistics to address multiple virtualization challenges, including gaining virtual network topological and location awareness, securing virtual networks, demonstrating compliance, controlling VM sprawl and tracking virtual machines when they are moved via VMware VMotion. 

  FS 250* FS 1000* FS 2000* FS 3000* FS 4000*
(512 byte)
100 Mbps 1.0 Gbps 2.5 Gbps 5.0 Gbps 20.0 Gbps
(64 byte)
40 Mbps 400 Mbps 800 Mbps 1.2 Gbps 4.0 Gbps
Management Port 1 Cu; 10/100/1000
Monitor Port 2 Cu; 10/100/1000 3 Cu; 10/100/1000 5 Cu or 3 Cu and 2 optical fiber; 10/100/1000 2 optical fiber; 10 GB 4 optical fiber; 10 GB
Console Port Serial Serial, KVM *
Hardware Platform FW-7565B-LC1 R210II R620
Hardware Generation FW-7565D 11Gv2   12G
Form Factor 1U-Short Rack (Stackable) 1U Rack (Stackable)
Height 4.5 cm
(1.75 in.)
4.24 cm
(1.67 in.)
4.3 cm (1.68 in.)
Width 43 cm
(16.93 in.)
43.4 cm
(17.09 in.)

With rack latches:
48.24 cm (18.99 in)

Without rack latches:
43.4 cm (17.08 in)

Depth 27.5 cm (10.83 in.) 39.37 cm
(15.5 in.)
With power supplies and bezel:
74.3 cm (29.25 in)
Without power supplies
and bezel:
69.2 cm (27.25 in)
Weight 6 kg
(13.23 lbs)
8.058 kg
(17.77 lbs)
18.6 kg (41 lbs) maximum configuration
Rails Mounting ears Rack chassis with Versa rail; round holes for third-party racks Sliding Ready Rails with
Cable Management Arm
Storage 160 GB non-redundant 146 GB RAID-1 Redundant 300 GB (RAID-1 Redundant)
Power Single;
100 W
Single; 250 W Redundant; 750 W AC,
50/60 Hz
Auto Ranging (100V to 240V)
Heat Dissipation 341 BTUs per hour 1039 BTUs per hour 2891 BTUs per hour maximum

0° to 55° C 
(32° to 131° F)

-20° to 70° C
(-4° to 158° F)

10° to 35° C
(50° to 95° F)

-40° to 65° C
(-40° to 149° F)

Operating: 10° to 35° C (50° to 95° F) at 10% to 80% relative humidity, with 78.8° F (26° C) maximum dew point

Note: For altitudes above 2,952 feet, the maximum allowable dry bulb temperature is derated 17° C (1° F) per 550 feet

-40° to 65° C (-40° to 149° F) with a maximum gradation of 20° C (68° F) per hour

Relative Humidity Operating:
5% to 95%

5% to 95%

20% to 80%
with maximum gradation of 10% per hour

5% to 95%

Operating: 20% to 80% (non-condensing) at a maximum wet bulb temperature of 84.2° F (29° C)

Storage: 5% to 95% (non-condensing) at a maximum wet bulb temperature of 100.4° F (38° C)

Regulatory Compliance
Please call for a complete list • CE Emission
• FCC Class A
• RoHS
• FCC (U.S. only) Class A
• DOC (Canada) Class A
• CE Mark (EN55022 Class A, EN55024, EN61000-3-2, EN 61000-3-3, EN60950)
• VCCI Class A
• UL 1950
• CSA 950
*Specs for StealthWatch v6.5
**Supports direct keyboard and monitor for configuration.


 Minimum Disk Space Requirements VMware ESXi Versions Supported Minimum Memory Requirements Minimum CPU Requirements
1.4 GB 4.0 and 5.0 512 MB 2GHz