Firewall

[IQM]

I am currently making a firewall program. However, I need to know WHICH programs are using the winsock dll, and WHAT the data is they are sending and receiving. Does anyone know how to do this?

[ty2]

You could use a port scanner and scan for open ports...but I don't know if there is a way to relocate the ports to the programs attached. I know it IS possible, but how I don't know. What you want is the data between the program and internet, but how do you sort of spy on the transaction of data I don't know. If you know what ZoneAlarm is, it can tell you the name of the program using the internet. I think I saw a control that can do what you want, but I can't find it anymore. Oh well. Good Luck. I hope someone helps you. Your program sounds promising.

[MrShickadance]

System Firewalls should be run in a lower part of the TCP/IP stack, blocking all illegal port requests. In VB, using winsock, you are working at the top of the stack(application layer), there is no control for port blocking at this level.

[IQM]

Can you use the winsock api to observe data between internet and programs, and block ports? If so, then how? Thanks.