How payloads provide backdoors when the victims are out of local network [duplicate]

I am a newbie in cyber security and trying to learn how payloads provide backdoors when the victims are out of the local network.
I know that metasploit is a good tool for making payloads, and using some other tools we can also turn our pa… Continue reading How payloads provide backdoors when the victims are out of local network [duplicate]

Why nmap does not work in one network while it works properly in a different network

I wanted to scan two different networks such that one is my own local network in my house and the other is the local network of the library of my university. My aim was to find IP addresses of living hosts, and use these IPs to make a nmap… Continue reading Why nmap does not work in one network while it works properly in a different network