I know that 90% of fails that happen in a OS is because the user and not of the Programmer, that write it, but I want to ask how secure is Deepin for a user that have a firewall inside your brain?
Your know some book that teach about firewall to I build my own firewall? Or some open source code for linux of firewall, of debian family (that work with Deepin)? The Gufw is good ?
中文 
I know that 90% of fails that happen in a OS is because the user and not of the Programmer, that write it, but I want to ask how secure is Deepin for a user that have a firewall inside your brain?
Your know some book that teach about firewall to I build my own firewall? Or some open source code for linux of firewall, of debian family (that work with Deepin)? The Gufw is good ?