Linux
Port Listeners
Today I had a request to open a particular port. Once I’d put the required rule in place, I ran a port scan and found the port is still reporting as closed. This means either […]
nmap
Linux
nmap
nmap -sS 1.2.3.4 nmap -PN 1.2.3.4 -p 22 The -PN option treats the host as if it is online and will not perform any host discovery.