IP Addresses

[Henk1]

I need to write a program that needs to do four things.

Firstly, it needs to scan the network, and bring back the IP Address and Machine Name of all the machines on the network.

Secondly, it needs to scan all ports on these machines, coming back with a list of open and closed ports.

Thirdly, it needs to scan the firewall/proxy for open and closed ports, finding out which ports will allow packets through, and which not.

And Finally, it needs to pick up applications that sends data to a specific port on my PC (say 127.0.0.1 port 1080), and send them to a specific IP Address and port (routing through a specific port and IP Address - like a firewall/proxy), based on a list that I create. This will be to bypass firewalls/proxies to still be able to get data out of the firewall/proxy.

There is a program simular to this, called Http-Tunnel, but that will not work from our corporate network.

I know this is prolly a whole course, but all I need is to get a good starting point, and I will take it from there.

I am fairly new to C#, so please be (fairly) detailed in any explanations you may give.

Thanks for any answers. I need to learn about these things and this is the only place I know to ask.

 

[Henk1]

Doesn't anybody know?

Not even the scanning machines and their ports on the network?

 

[Raenius]

This is a simpel TCP sniffer in C#, maybe it will point you in the correct direction:

http://www.c-sharpcorner.com/Network/SimpleSnifferInCSLM.asp

- Raenius

"Free will...is an illusion"

 

[Henk1]

Thanks alot. Will try it.

 

[Raenius]

Allright let me know where you're going with this and how everything is developing...

- Raenius

"Free will...is an illusion"