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In Topic: A system to control network access of others pc through C# ?

Posted 25 Jun 2012

hi ..yea i know there are lot of similar program in the market..
however , the purpose of spending time doing this is for academic purpose =)

Curtis Rutland, on 25 June 2012 - 10:57 PM, said:
Sounds like you're reinventing the wheel. There are dozens of "net-nanny" type programs that'll provide you content filtering, and they'll do it better than whatever solution you'll be able to create. This is not an insult of your skills; it's a simple fact that a large team of people working on a single problem for years are going to have a fairly comprehensive project.

My suggestion: go with a commercial product. Heck, you can probably even find a freeware one. Don't waste the time and effort in making this yourself.
In Topic: A system to control network access of others pc through C# ?

Posted 25 Jun 2012

yea..this is interesting....thanks for the sharing..will look deeper into it

Sergio Tapia, on 16 April 2012 - 11:45 PM, said:
A very interesting question, I have no idea but I'll give the internet a good searching maybe something turns up.

Edit:

Here are some ideas.

Disable/enable the ethernet interface on a machine:
http://social.msdn.m...9-216f1058e390/
In Topic: A system to control network access of others pc through C# ?

Posted 16 Apr 2012

Hi
Yes..im doing similar things, however, i modify the objective of the project,
previously it was aim to filter the ”Content“
now, i just want to do something which can block the pc from accessing the network~
Is the link you give me able to achieve that? control the network access from the main pc?

modi123_1, on 16 April 2012 - 11:49 PM, said:
Weren't you doing a packet filtering project a while back? Is this that same project?

http://www.codeproje...iltering-in-NET
In Topic: is it possible to remove a topic and also change my user ID?

Posted 16 Apr 2012

because i made a mistake...i shouldnt use this user ID..and it appear on Google search result..which i dont wish too

macosxnerd101, on 16 April 2012 - 01:49 PM, said:
We don't remove topics unless they violate the rules. Also, you only have 6 posts. I don't see a compelling reason to change your username.
In Topic: Packet filtering system for LAN, how to develop?

Posted 15 Apr 2012

after about 4 or 5 months, im back!!
Im havent start my project..ok..
it seems like i confuse myself and you people,
so now just let me clarify the situation
again, i would like to proposed to develop a system which can control the network access in a computer lab
21PC,
1 for lecturer, 20 for student
The system shall able to BLOCK or UNBLOCK students PC from being access to rest of network!
Thats it..no more filtering the content!
So, does it still same with the "Net nanny"program ?
Thanks.

blackcompe, on 05 October 2011 - 10:15 AM, said:
Quote
This system is proposed to used in a computer labs, or any small local area networks.
Assume in the labs environment, there are 21 PC,1 for lecturer, and the rest is for student,
these 21 PC having the same default proxy setting which all pointing to 10.2.1.4 port 8080~
and their IP address start from 10.21.12.4 to 10.21.12.25~

Let me remind you, I'm not a system administrator and what I have to say may or may not be helpful. I don't know the requirements of your software, nor do I know the network environment your working in.

tlhIn`toq was saying that any user can just re-configure their browser. In a corporate environment it's likely that policies are set. If the policy won't allow users to change their proxy settings, then a proxy would work. But, then tlhIn`toq said that a user could run a web browser from flash drive. If the policy disables any old executable from running, then the web browser can't be ran, so we can consider the proxy solution again.

I'm assuming that "Net Nanny" programs are a little different. I'm assuming they're designed for personal use, where there are no policies and users can change proxy settings, so that no proxy is used. In that case, the program would have to be much more complex.

Quote
Assume in the labs environment, there are 21 PC,1 for lecturer, and the rest is for student,
these 21 PC having the same default proxy setting which all pointing to 10.2.1.4 port 8080~
and their IP address start from 10.21.12.4 to 10.21.12.25~

Sounds like your environment is set up to use a proxy. See Proxy - content filtering.

Hi thanks for your precious feedback! appreciate it
now i changed my requirement.
No longer filter the content of the packet, well,
i just wish to develop a firewall like program, which can cut them off from accessing the network,
that would be good enough, as the previous scope was too large for me~
Please advice.
Thanks.

tlhIn`toq, on 05 October 2011 - 05:01 AM, said:
Keep in mind though, this is really only a good idea for your homework assignment. And only if you can make adjustments to your professor's computer. If you can't change his browser settings, then your program won't filter anything. Sounds like an 'F' grade to me.

In the real world that approach is pointless. Just about anyone can figure out or Google how to change their browser off of the proxy. Then they have unfiltered internet access again.

And if they can't figure out how to change the current browser, they can always just install a different browser and it will work on the default settings. Or just carry in a self contained browser on a USB stick.