What software to modify and create TCP/IP packets?

Question

I am learning about network packets and I was wondering how I could intercept and modify and/or create a packet and send it? Details: - I have Windows OS. - I would prefer an easy to use and easy to understand program. - If possible, a program that can create and modify packets would be nice. But if there is no program that can do both please point me to two programs that can do each. - If there is one out there with a GUI, that would be very helpful to me. - A program that intercepts packets and allows for modifying, not just HTTP. I have tried [TcpCatcher](http://www.tcpcatcher.org/), but for some reason it does not seem to capture any packets.

Answer 1

Wireshark is a good open-source software tool that you can use to capture and analyze network packets in real time; It is compatible with WIndows OS. Here is the link to their website: https://www.wireshark.org/download.html