Wireshark is a software which is used for troubleshooting the network. It is used for many purpose such as blocking any network, catching unwanted network, blocking any host. I use wireshark for two months and I found a good result from it. Wireshark probvide a very good functionality for troubleshooting.
It is very easy to use.
It takes 10-15 minutes in installation process but steps are very easy.
Features are very good in this software.
Service and support is very good.