Sudo is a command that uses root privileges without logging in as root. The default time is five minutes. As long as it has been used before, you do not need to enter a password when using sudo within five minutes! In addition, Linux has a very easy-to-use package: Nmap. It can easily scan the network and single-machine IP to access the device and what ports are opened for everyone to use.
If the user's computer does not have a strict physical firewall isolation, even this If the virtual firewall settings on the computer are not strict, it will be easy for canada dataset someone to exploit these loopholes to damage the system, or cause business losses. Linux security settings and Apache2 certificate replacement As shown in the picture above, the author uses his newly installed Linux host to nmap other devices.
Maybe if you use a Windows host, you need to know which IPs are used in this environment, and you need to write scripts or even ping one by one, but through Linux The kit can easily capture who has online devices in this environment. installed Linux host or Windows Server in the company, once the system is installed, the basic protection settings must be done first before starting to perform the tasks assigned to the machine.