In this module, we are talking the Security related admin tasks. In the last part of this module, we will see how we can check open ports on our system using commands like ss, netstat, lsof and fuser. In the end we have a look at the lovely, cute and frightening (yes, all of these at the same time!) nmap command which a tool to scan networks. And tell you what? this is what most hackers use when they are on a new network! 00:00 - Checking for open ports with netstats 03:12 - ss to check for open ports 04:10 - lsof 05:10 - fuser to check who opened a file 07:20 - nmap to scan a network Full LPIC1 course:    • LPIC 1 (version 500) Course   Textbook: https://linux1st.com/1101-perform-security-administration-tasks.html