Question

Block streaming Radio

Asked by: klause2

in the question
http://www.experts-exchange.com/Operating_Systems/Win2000/Q_20566458.html?query=block+media+player+radio&searchType=all

It is suggested to block port 1755 to stop windows media player from streaming radio stations. I just tried that and have had no luck. Any ideas on what else to do to stop the misuse of bandwith?

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Asked On
2003-12-15 at 13:20:37ID20826466
Tags

block

Topic

Windows 2000 Operating System

Participating Experts
3
Points
250
Comments
7

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Answers

 

by: LucFPosted on 2003-12-15 at 13:23:58ID: 9945005

Hi klause2,

You might want to take a look at this one:
http://www.plevna.f9.co.uk/

Greetings,

LucF

 

by: klause2Posted on 2003-12-15 at 13:34:55ID: 9945096

I apperciate the link, but I was hoping for something at the firewall level. I have a pix515e if that helps.

 

by: LucFPosted on 2003-12-15 at 13:37:43ID: 9945129

Try this ...

for the port put TCP on port 1755 thats all then put in a rule for this
saying aynone from the outside to anywhere inside drop-it.

then make one up for UDP on port 1755 also and put that service in the same
rule as above...

If all this dosn't work use your log veiwer to see what is going on by
filtering on your own pc with the Media Player... use the info found in your
logs and build a rule from there...

 

by: LucFPosted on 2003-12-15 at 13:38:36ID: 9945136

 

by: griesshPosted on 2003-12-15 at 17:44:30ID: 9946243

From streamingmedia .com, the article speaks for itself:

http://www.streamingmedia.com/tutorials/view.asp?tutorial_id=61

"However, companies that wish to allow employees access to streaming can leave ports 554 (RTSP, allowing RealMedia G2 and QuickTime streaming), 1755 (MMS, permitting Windows Media streaming), and 7070 (PNM, permitting Real's legacy pre-version 5.0 streams) open. Other companies choose to firewall all UDP (User Datagram Protocol) traffic, relegating streaming to its less flexible cousin, TCP (Transmission Control Protocol).

Still, with all of the streaming-specific ports commonly restricted, streaming media software vendors have had to be creative to allow their content to pass through corporate firewalls. RealNetworks was the first to embed streaming traffic in HTTP requests, making it very difficult for firewalls to differentiate between streaming media and plain Web browsing. HTTP streaming delivery and generic Web browsing both use port 80, and both are compliant with the same HTTP specification, so filtering only one is almost impossible. Microsoft implemented HTTP streaming in Windows Media soon after and Apple released QuickTime 4.1 this year with embedded HTTP support. "

 

by: klause2Posted on 2004-01-07 at 06:07:51ID: 10061823

I ended up using ISA server and blocking all audio MIME attachments. Thats the only way I can find to do it. Of course this also blocks any legit sounds people are trying to use like web meetings and the like.

 

by: Tachyon_1Posted on 2008-08-26 at 07:37:53ID: 22315205

I see this question is already closed, but since I don't care about the points anyway....


You might want to look at blocking some of this at the DNS level instead of or as well as with firewall rules.
Combining something like OpenDNS, for example, with your firewall makes for a pretty powerful combination of Internet access control.

If you do this though, remember to also only allow DNS requests to OpenDNS' IP's, or better, run your own caching name server and allow only it to make outgoing DNS requests.

Just a thought, but this type of setup is working well for us.

20120131-EE-VQP-002

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