This was certainly the latest version of Norton Internet Security, which I bought. The software has been worse each year! Both computers (including notebook) were getting slower. Changing the firewall settings is more complicated. Despite sharing the IP addresses and enable the entire network I can not access my desktop PC with a notebook. Only after I have disabled the firewall on the notebook, I can work without restriction. It may be possible that I do not have everything set up correctly, but which in turn is very difficult because the online help does not really help. I climb on to G-Data: cheaper and better!