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Cisco 850 Series
Series Distinctions
When to Deploy
Deploy the Cisco 850 Series when you need:
• Secure connectivity with stateful inspection
firewall and IP Security (IPSec) VPN support for
small offices
• Four-port 10/100 switch
• Secure WLAN 802 .11b/g option with a single
fixed antenna
• Easy setup, deployment, and remote
management capabilities through Web-based
tools and Cisco IOS Software
Platform Overview
Cisco 850 Series
Security Features
WLAN Features
15
Cable
Teleworker
Small Offices or
Small Businesses
Corporate Headquarters
Internet
DSL
Network Example
Cisco 850 Series
WAN Technologies
• Cisco 851 – 100 MB Ethernet
• Cisco 857 – ADSL over analog telephone lines
LAN Switch
4-port 10/100Base-T switch with autosensing MDI/MDX (Media Device In/Media
Device Crossover) for auto-crossover
Security Stateful firewall, IPSec, and AES VPNs
WLAN Option 802 .11b/g with single fixed antenna
Models WAN Interface LAN Interface 802.11b/g
Cisco 851 10/100 Mbps Fast Ethernet 4-port 10/100 Mbps managed switch No
Cisco 851W 10/100 Mbps Fast Ethernet 4-port 10/100 Mbps managed switch Yes
Cisco 857 ADSL 4-port 10/100 Mbps managed switch No
Cisco 857W ADSL 4-port 10/100 Mbps managed switch Yes
Cisco 850 Security Features
• Stateful inspection firewall
• Hardware-accelerated Triple Data Encryption Standard (3DES) for IPSec
• Hardware-accelerated Advanced Encryption Standard (AES) for IPSec
• IPSec 3DES termination/initiation
• IPSec pass-through
• Point-to-Point Tunneling Protocol (PPTP) pass-through
• L2TP pass-through
WLAN Hardware
• 802 .11b/g
• Wi-Fi and Wireless Multi-Media (WMM)
Certified
• Automatic rate selection for 802 .11b/g
• Single, fixed antenna
• WECA interoperability
• Default antenna gain: 2 .2 dBi
WLAN Software Features
• Maximize throughput or maximize
range option
• Software configurable transmit power
• SSID Globalization
• SSIDs =10
• Wireless VLANs =10
• Encrypted Wireless VLANs = 4
• MBSSIDs =1
WLAN Security Features
• 802 .1X
• 802 .11i
• Wi-Fi Protected Access (WPA) and AES
(WPA2)
• EAP Authentication: Cisco LEAP, PEAP, EAP-TLS,
EAP-FAST, EAP-SIM, EAP-MD5, EAP-TTLS
• Static and dynamic Wired Equivalent
Privacy (WEP)
• Temporal Key Integrity Protocol (TKIP)/SSN
Temporal Key Integrity Protocol/Simple
Security Network encryption
• MAC authentication/filter
• User database for survivable local
authentication using LEAP and EAP-FAST
• Configurable limit to the number of
wireless clients
• Configurable RADIUS accounting for
wireless clients
• PSK (Pre Shared Keys) (WPA-SOHO)
PHySICAL SPECIFICATIONS
Dimensions (H x W x D) Dimensions with antenna connectors: 2 .00 x 10 .25 x 9 .13 in .
(50 .8 x 260 .4 x 231 .9 mm)
Dimensions without antenna connectors: 2 .00 x 10 .25 x 8 .50 in .
(50 .8 x 260 .4 x 215 .9 .9 mm)
Weight 2 .10 lb
POWER DISSIPATIONS
AC Input Voltage
100–240 VAC
Frequency 50–60 Hz
Maximum Output Power
26W
Output Voltages 5 and 12V
ENVIRONMENTAL SPECIFICATIONS
Operating Temperature 32 to 104°F (0 to 40°C)
Non-operating Temperature -4 to 149°F (-20 to 65°C)
Relative Humidity (non-condensing) 10 to 95%
Operating Altitude 0 to 15,000 ft . (0 to 4570 m)