IT hands-on

Nmap only scans the first thousand " 1000 " ports -<i> by default</i> -. To override this behavior, we could specify out "top" ports to be s

The basic form of port scanning to know whether a port is open or closed, is establishing a full connection to that port. According to the TCP protocol

We could use the below command, to scan the default ports - <i> most commonly used</i><i>  ones </i> -: The output describes the ports and the services associated with

UFW or the uncomplicated firewall is a program build on top of iptables -<i> program for writing firewall rules in Linux</i> - to make writing and changing t

Access control lists  - <i> ACLs </i> - give us more options in terms of controlling access to files. For example, using <i> ACLs ,</i> if we want to give access  to a file

When we log on a Linux system on the command line, the "<i> login</i> " program checks our credentials by looking into the files "<i> /etc/passwd</i> &qu