We help IT Professionals succeed at work.

We've partnered with Certified Experts, Carl Webster and Richard Faulkner, to bring you two Citrix podcasts. Learn about 2020 trends and get answers to your biggest Citrix questions!Listen Now


QoS blocking router

Medium Priority
Last Modified: 2012-05-06
I'm after a new router - one that I can truly configure, and block things like Skype and control QoS etc.  Please recommend one - I'm willing to pay up to £200 on this.
Watch Question

Buy a Linsys WRT64GL router ($50-60) or (better) a Buffalo WHR-G54s, and install free DD-WRT ( www.dd-wrt.com/ ) or Tomato ( http://www.polarcloud.com/tomato ). I'm partial to the latter, but you might find more DD-WRT tutorials on the Web



I've had a quick look, so now have follow-up Qs:

1. I can't see Skype [blocking] mentioned.

2. Could I restrict certain machine's bandwidth, i.e., degrade certain machines - so that they're give low-priority using either of these?

Routers operate at the network layer of the OSI model, not at the application layer. To block a particular application at the network level, you need to do block the IPs or protocols that the application uses. You can do that -to some extent- with any decent router. Buffalos are still available in GB I believe.

Tomato & DD-WRT offer L7 filtering that helps further identify protocols that many common services use.
http://www.dd-wrt.com/wiki/index.php/Access_Restrictions and http://www.dd-wrt.com/wiki/index.php/Access_Restrictions

The problem with Skype blocking is that you can't simply block a port, because it has many ways of connecting. Skype Voip doesn't use much bandwidth, but Video does. Usually, the problem is with upstream -not downstream- trafic. That's why Skype Video becomes such a pest.

Why not setting up QoS & limiting the Up & Down rates for each user? See: http://www.ccirrus.per.sg/rfc13109/2006/10/setting-up-qos-on-dd-wrt-v23-sp2/ or http://www.decimation.com/markw/2007/10/03/tomato-qos-setup/



Thanks - and,um, - perhaps I shouldn't have asked, i.e., a bit too router-techie - but very interesting nevertheless.

So I get a Buffalo, e.g., http://tinyurl.com/dmogmb or a LinkSys?  My plan is to follow-up on the links you provided, and to install either dd-wrt or tomato ... I really want to 'throttle' excessive bandwidth taken up by playing WoW - if that helps!?

I'd go for Buffalo+Tomato. I'm happy with Linksys, though I miss Buffalo routers. Fortunately, the company will once again be able to sell WiFi devices in North America for the permanent injunction against them was stayed last December.

Installing any 3rd-party firmware will void the warranty. Be careful when flashing since you can brick the router.

You might be able to throttle WoW on your present router (or on your new WHR-G54S) with the existing firmware: World of Warcraft uses TCP Port 3724. The Blizzard Downloader also uses TCP Ports 6112 and 6881-6999 (Latter also used for Torrents). You can find their US servers' IPs on the Web (http://www.wowwiki.com/US_Realm_List_By_Datacenter), check for UK's addresses.

Not the solution you were looking for? Getting a personalized solution is easy.

Ask the Experts


Thanks Grizzly!  I'll go for a Buffalo etc.  And, 'I'll be back' if I have any probslems.  Thanks again.
You're welcome. I'm certain you're going to like the router.
TY for the points
Access more of Experts Exchange with a free account
Thanks for using Experts Exchange.

Create a free account to continue.

Limited access with a free account allows you to:

  • View three pieces of content (articles, solutions, posts, and videos)
  • Ask the experts questions (counted toward content limit)
  • Customize your dashboard and profile

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.


Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.