Solved

Block skype via wingate. How?

Posted on 2007-04-10
10
1,237 Views
Last Modified: 2013-12-04
Dear EE member,
I play the role as a System Admin, I have one stubborn user who install Skype in her pc. Now, I want to block her via wingate 4.2 proxy server. I try to block her with winsock redirect service where app name is skype.exe, it failed. I try to block the skype ip, but there are too many ip. How to block her from accessing skype messager without uninstall her skype in her pc?

FYI:My server is win 2K Server.

Regards,
Peter
0
Comment
Question by:peter_chong
  • 6
  • 3
10 Comments
 
LVL 27

Assisted Solution

by:Tolomir
Tolomir earned 250 total points
ID: 18880921
Take a look at:

http://lists.grok.org.uk/pipermail/full-disclosure/2005-November/038646.html

In short:
You should block the usual skype ports + all connection attempts that go directly to an ip not to an dns name.

Tolomir

0
 
LVL 7

Expert Comment

by:TelnetServices
ID: 18881955
Tolomir -

Thanks for that one - that link was great reading... I almost wished I'd asked the question so I could give you the points!!!!

(and I didn't even know I wanted to block skype really - until now!)
0
 
LVL 27

Expert Comment

by:Tolomir
ID: 18882097
Indeed skype can be quite hard to defeat, it's even drilling holes through the firewall ... from both sides.

This way direct NAT <---> NAT connections are possible.

Tolomir
0
 

Author Comment

by:peter_chong
ID: 18882274
Dear EE member,

I would like to clarify that I want block skype via wingate proxy not using squid.

Regards,
Peter

0
 
LVL 27

Accepted Solution

by:
Tolomir earned 250 total points
ID: 18882422
Well sure.

The posting should give you an idea, what to block. Now all you have to do is implement these suggestions.

I cannot help you any further apart from pointing you to the support site of wingate:

http://support.qbik.com/index.php?_a=tickets&_m=submit

(Current version is 6.2 btw.)

Tolomir
0
Give your grad a cloud of their own!

With up to 8TB of storage, give your favorite graduate their own personal cloud to centralize all their photos, videos and music in one safe place. They can save, sync and share all their stuff, and automatic photo backup helps free up space on their smartphone and tablet.

 

Author Comment

by:peter_chong
ID: 18895166
Dear EE member,
My wingate version is 4.2. It takes time to upgrade to later version, since it needs management approval. I am not in-charge of firewall and router. I can only access Win2K server in my workplace. Hence, I have limited resources to block the skype user.  Any alternative to block this skype user instead of uninstall her skype in the pc?

Please help.

Thanks.

Regards,
Peter
0
 

Author Comment

by:peter_chong
ID: 18902864
Dear EE member,
I have uninstalled her skype in her pc. But, how to
control if she try to reinstall again. Any web site can
I block?

Regards,
Peter
0
 
LVL 27

Expert Comment

by:Tolomir
ID: 18903549
Well that is quite easy.

Just don't make her Administrator.

Take a look at http://www.windowsecurity.com/articles/Increasing-Security-Limited-User-Accounts-Restricted-Groups.html for details.

0
 
LVL 27

Expert Comment

by:Tolomir
ID: 18903552
I don't think you can block all skype download sites:

http://www.google.com/search?as_q=skype+download

Tolomir
0
 
LVL 27

Assisted Solution

by:Tolomir
Tolomir earned 250 total points
ID: 18903576
Well that is quite easy.

Just don't make her Administrator.

Take a look at http://www.windowsecurity.com/articles/Increasing-Security-Limited-User-Accounts-Restricted-Groups.html for details.

0

Featured Post

Better Security Awareness With Threat Intelligence

See how one of the leading financial services organizations uses Recorded Future as part of a holistic threat intelligence program to promote security awareness and proactively and efficiently identify threats.

Join & Write a Comment

This article offers some helpful and general tips for safe browsing and online shopping. It offers simple and manageable procedures that help to ensure the safety of one's personal information and the security of any devices.
If your business is like most, chances are you still need to maintain a fax infrastructure for your staff. It’s hard to believe that a communication technology that was thriving in the mid-80s could still be an essential part of your team’s modern I…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.

758 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

19 Experts available now in Live!

Get 1:1 Help Now