Monthly Archives: October 2010

How to block BitTorrent traffic in your network?

Some of you might find out that the speed of your network is very slow. Maybe some users were watching movies, there is also another possibility—they might be using some BitTorrent client to download movies and music and software.


A lot of people asked about how to block BitTorrent traffic. Usually when we want to block some software, we would think about block some ports. Actually this might not work in blocking BitTorrent. Because BitTorrent can use any random port.For more details about BitTorrent protocol, please check: BitTorrent protocol.


Now you can block BitTorrent easily with the help of WFilter. I will show you how to block BitTorrent step by step.



How to block BitTorrent with WFilter?



1. First you need to block UDP ports 1024-65534 in your router or firewall.


2. Add a blocking level and enable “Block BitTorrent”



3. Apply blocking level to the computers you want to block.



4. Blocking events in WFilter.



Before blocking, bittorrent had a “down speed” of “155kB/s”.



After blocking, the “down speed” and “up speed” are all ZERO.



Check bittorrent blocking video at:http://www.youtube.com/watch?v=8FFUQ4br-YA


You can find the more about how to block P2P traffic and downloading at How to block P2P traffic and downloading?


 

How can I block tor or other similiar application?

1. What is tor ?

Tor is a system intended to enable online anonymity, composed of client software and a network of servers which can mask information about users’ locations and other factors which might identify them. Use of this system makes it more difficult to trace internet traffic to the user, including visits to Web sites, online posts, instant messages, and other communication forms. It is intended to protect users’ personal freedom, privacy, and ability to conduct confidential business, by keeping their internet activities from being monitored. The software is open-source and the network is free of charge to use.

Since client workstations can use tor to bypass internet filtering, so you may want to block tor traffic in your network.

In this tutorial, we will guide you to block tor traffic with “WFilter
Enterprise 3.3″.

2. How to block tor with Wfilter?

Because tor uses HTTP/TLS to encrypt its traffic, we need to use “HTTPS black/white list” feature of WFilter to filter HTTPS websites to block tor.

First, create a new “HTTPS White List” and add the allowed HTTPS domains in it. As in below figure:


Enable “HTTPS black/white list” in certain blocking level settings.

Finally, apply this blocking policy to certain computers.

3. Now tor will be completely blocked.


Blocking events in WFilter:

More information, please check “WFilter Enterprise”.

Other related links:

How to block
internet downloading?

How
to monitor internet usage on company network?

Internet
monitoring software for business

How to filter web
surfing?

How to block websites and restrict internet access?
How to block HTTPS websites on my network?

How to block windows update in my network?

Sometimes you might want to block automatic windows update on your network without the need to manually configure every workstation.

To block windows update, certain websites in the below list shall be blocked.

  • *.windowsupdate.com
  • *.update.microsoft.com

You can block certain websites in your firewall to achieve that. In this tutorial, I will guide you to block windows update with “WFilter Enterprise 3.3″.

First, add a website black list and enable it in a certain blocking policy.

In the website black list, you need to add “*.windowsupdate.com” and “*.update.microsoft.com”.

 

Second, apply this blocking policy to certain computers.

 

 

Now, windows update will be completely blocked.