IT Pro is supported by its audience. When you purchase through links on our site, we may earn an affiliate commission. Learn more

Dell SonicWALL NSA 250M Wireless-N review

The SonicWALL NSA 250M Wireless-N appliance offers SMBs and remote offices an extensive range of tough gateway security measures, but the cost can add up quickly.

Gateway AV and anti-spam

Gateway AV provides a global policy that you can assign to any port zone. Scanning for HTTP, SMTP, POP, IMAP and CIFS can be enabled individually and for all protocols you can block password protected archives and packaged executables.

The appliance comes with basic anti-spam as you can use RBLs but we've never found these to be very useful. You're better off paying for SonicWALL's anti-spam service as it's far more effective.

This uses a scoring system to classify messages as definite or probable spam, phishing or infected and you can reject, delete or tag them. The Junk Store feature will prove useful as you can install it on your Exchange Server and allow users to inspect their personal quarantine areas and delete or release messages.

Dell SonicWALL NSA 250M Wireless-N - 2

The AppFlow Monitor keeps track of all web apps and you can use this screen to create new application rules on the fly

Application Controls

The Application Control option is designed to provide more versatile policing of web browsing activities, file transfers, email and email attachments. It can provide data leakage protection by scanning emails and files, checking message content, subjects, senders and recipients and blocking file types.

You can use it to control FTP transfers or HTTP requests and apply actions such as blocking or redirecting and limiting bandwidth for certain types of file transfers. It can also handle VoIP services as it can identify and prioritise SIP and H.323 traffic.

A useful feature is the ability to view the AppFlow Monitor from the web console's dashboard and see all application related activity. If you see an app pop up that you don't like the look of you can quickly create a rule that either blocks it, applies a bandwidth management policy or monitors its traffic.

You can go deeper with advanced application rules as these use signature IDs to identity specific activities. The appliance can spot actions such as Facebook pokes, Hotmail attachments uploads, Skype logins the list is endless and either block or log this activity.

Dell SonicWALL NSA 250M Wireless-N - 3

They're tricky to set up but the virtual wireless APs can present a range of guest services each with their own set of security policies

Featured Resources

Mastering retention

Turning user behaviour insights into retention strategies

Free Download

Dell PowerEdge with AMD

IT applications and infrastructure are the prime catalyst for new revenue creation

Free Download

Building for success with off-premises private cloud

Leveraging co-location facilities to execute your cloud strategy

Free Download

Cyber resiliency and end-user performance

Reduce risk and deliver greater business success with cyber-resilience capabilities

Free Download

Recommended

Dell XPS Desktop 8950 review: Commendable, but uninspiring
Hardware

Dell XPS Desktop 8950 review: Commendable, but uninspiring

19 Aug 2022
Cyber resiliency and end-user performance
Whitepaper

Cyber resiliency and end-user performance

17 Aug 2022
Dell PowerEdge with AMD
Whitepaper

Dell PowerEdge with AMD

12 Aug 2022
The trusted data centre and storage infrastructure
Whitepaper

The trusted data centre and storage infrastructure

12 Aug 2022

Most Popular

46 US states call for Meta monopoly lawsuit to be reinstated
mergers and acquisitions

46 US states call for Meta monopoly lawsuit to be reinstated

20 Sep 2022
Anonymous hacks Iranian government and state broadcasters
cyber attacks

Anonymous hacks Iranian government and state broadcasters

22 Sep 2022
Why collaboration is key to digital transformation
Sponsored

Why collaboration is key to digital transformation

13 Sep 2022