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Wireless N Unified Service Router



The D-Link DSR-250N Unified Services Router, high-performance networking solutions to address the growing needs of small and medium businesses. The integrated high-speed IEEE 802.11n wireless technology in the D-Link DSR-250N Unified Services Router offers comparable performance to traditional wired networks, but with fewer limitations. Each router provides optimal network security via features such as Virtual Private Network (VPN) tunnels, IP Security (IPSec), Point-to-Point Tunnelling Protocol (PPTP), Layer 2 Tunnelling Protocol (L2TP), Generic Routing Encapsulation (GRE)2, and Secure Sockets Layer (SSL). These routers also allow you to empower your road warriors with clientless remote access anywhere and anytime using SSL VPN tunnels.

Superior Wireless Performance

The D-Link DSR-250N Unified Services Router include 802.11b/g/n, allowing for operation on the 2.4 GHz wireless LAN radio band. Multiple In Multiple Out (MIMO) technology allows the DSR-150N to provide high data rates and a wide wireless coverage area with minimised “dead spots.”

Flexible Deployment Options

The DSR-250N supports Third Generation (3G) networks via an extendable USB 3G dongle1. This 3G network capability offers an additional data connection for critical or backup services. A 3G USB dongle can be configured as a third WAN port, performing Traffic Load Balancing and executing automatic failover whenever the primary WAN link gets lost.

Robust VPN Features

A fully featured virtual private network (VPN) provides your mobile workers and branch offices with a secure link to your network. The D-Link DSR-250N Unified Services Router is capable of simultaneously managing 5 Secure Sockets Layer (SSL) VPN tunnels, as well as  10 Generic Routing Encapsulation (GRE) tunnels2, empowering your mobile users by providing remote access to a central corporate database. Site-to-site VPN tunnels use IP Security (IPSec) Protocol, Point-to-Point Tunnelling Protocol (PPTP), or Layer 2 Tunnelling Protocol (L2TP) to facilitate branch office connectivity through encrypted virtual links. The DSR-250N simultaneously support up to 25 IPSec VPN tunnels, and 25 additional PPTP/L2TP tunnels.

Efficient Green Technology

D-Link Green Wi-Fi and D-Link Green Ethernet features save power and help cut energy usage costs. The D-Link Green WLAN Scheduler shuts down your wireless network automatically according to a schedule you define, allowing you to turn off your wireless network during off-peak hours, saving energy and keeping your network secure. The D-Link Green Ethernet feature can detect if a link is down on a port, and automatically puts that port into a sleep mode that drastically reduces the amount of power used. In addition, compliance with RoHS (Restriction of Hazardous Substances) and WEEE (Waste Electrical and Electronic Equipment) directives make D-Link Green-certified devices an environmentally responsible choice.

1 The following 3G dongles are supported: DWM-152 A1/A2/A3, DWM-156 A1/A2/A3/A5*/A6*, DWM-157*, Huawei E1550, E173, and EC306.* The dongles marked with * will be supported through firmware upgrades.
2 Available through future firmware upgrade.


High-Performance VPN

  • Protocols
    • IPSec
    • PPTP/L2TP
    • GRE
    • SSL
  • VPN Tunnels
    • Up to 65 tunnels
  • DES, 3DES, AES

Enhanced Network Services

  • IPv6
  • IEEE 802.1q VLAN
  • Multiple SSIDs
  • Port Monitoring/Bandwidth Control
  • srTCM, trTCM, & policing

Wireless Access and Security

  • IEEE 802.11 b/g/n (2.4 GHz)
  • IEEE 802.1x RADIUS Authentication with EAP-TLS, EAP-TLLS, EAP-PEAP

Technical Specifications


Ethernet Interface

  • 1 x 10/100/1000 Mbps WAN Ports
  • 8 x 10/100/1000 Mbps LAN Ports 

Wireless Interface

  • 802.11b/g/n (Single Band)
  • 2 Detachable 2 dBi Omni-Directional Antennas

USB 2.0 Ports

  • 1

Console Port

  • RJ-45


Firewall Throughput2

  • 750 Mbps

VPN Throughput (3DES)3

  • 50 Mpps

Concurrent Sessions

  • 20,000

New Sessions (per second)

  • 200

Firewall Policies

  • 200

Internet Connection Type

  • Static/ Dynamic IP 
  • Multiple PPPoE

Firewall System

  • Static Route
  • Dynamic DNS
  • Inter-VLAN Route
  • NAT, PAT
  • Web Content Filtering
    • Static URL
    • Keywords
  • Intrusion Prevention System (IPS)
    • Signature Package Included in Firmware


  • DHCP Server/ Client
  • DHCP Relay
  • IEEE802.1q VLAN
  • VLAN (Port-Based)
  • IP Multicast
    • IGMP Proxy
  • IPv6
  • 3G Redundancy


  • Multiple Service Set Identifier (SSID)
  • Service Set Identifier (SSID) to VLAN Mapping
  • Standards
    • 802.11b/g/n
  • Wireless Security
    • Wired Equivalent Privacy (WEP)
    • Wi-Fi Protect Setup (WPS)
    • Wi-Fi Protected Access – Personal (WPA-PSK)
    • Wi-Fi Protected Access – Enterprise (WPA-EAP)
    • Wi-Fi Protected Access version 2 – Personal (WPA-PSK)
    • Wi-Fi Protected Access version 2 – Enterprise (WPA-EAP)

Virtual Private Network (VPN)

  • VPN Tunnels
    • 65
  • IPSec Tunnels
    • 25
  • SSL VPN Tunnels
    • 5
  • PPTP/L2TP Clients
    • 25
  • GRE4
    • 10
  • Encryption Methods
    • DES, 3DES, AES, Twofish, Blowfish, CAST-128, NULL
  • SSL Encryption Methods 
    • RC4-128, 3DES, AES
  • IPSec/PPTP/L2TP Server
  • IPSec NAT Traversal
  • Dead Peer Detection
  • IP Encapsulating Security Payload (ESP)
  • IP Authentication Header (AH)
  • VPN Tunnel Keep Alive 
  • Hub and Spoke

Bandwidth Management 

  • Maximum Bandwidth Control
  • Priority Bandwidth Control 
    • Port-based QoS
    • 3 Classes

System Management

  • Web-based User Interface
  • Command Line
  • SNMP v1, v2c, v3

Physical & Environment

Power Supply

  • External Power Supply Unit
  • DC 12 V/1.5 A

Max. Power Consumption

  • 12.6 W

Dimensions (L x W x H)

  • 140 x 203 x 35 mm (5.51 x 8.0 x 1.38 inches)

Operation Temperature

  • 0 to 40 °C (32 to 104 °F)

Storage Temperature

  • -20 to 70 °C (-4 to 158 °F)

Operation Humidity

  • 5% to 95% non-condensing


  • FCC Class B, CE Class B, C-Tick, IC


  • cUL, LVD (EN60950-1)

3rd Party Certification

  • Wi-Fi, ICSA-Certified Firewall, VPNC AES Interop, VPNC Basic Interop


  • 250,000 hours

1 Firewall throughput is measured using UDP traffic with a 1,518 bytes packet size, adhering to RFC2544.
2 Actual performance may vary depending on network conditions and activated services.
3 VPN throughput is measured using UDP traffic with the packet size 1420 bytes and encryption method 3DES plus SHA-1, adhering to PFC2544.
4 Available through future firmware upgrade.

Warranty Document

How to get the

D-Link Assist Services

Business Benefits

"We have built a diverse, reliable network...on D-Link components. They were the only ones we could find that had the right feature set at a cost we could afford."
John Watters
Grundy County IT Director
Hardware revisions
Downloads can vary across product revisions.

Contact Details

D-Link (Europe) Ltd
D-Link House
Abbey Road, Park Royal
NW10 7BX

General Queries:
+44 (0) 208 955 9000