Show open ports on Mac
If you want to know which ports are open on your Mac, you can use built-in tools in terminal: lsof -i -P | grep -i "listen" This gives you a…
Posts related to Apple
Using Apple Mac Keyboard with Ubuntu
You are a Mac user and run Linux machines virtually on your Macbook or your console keyboard is an Apple Mac Keyboard. Ubuntu Linux sets the keyboard parameters in the…
Use netcat instead of telnet
Network engineers often use telnet to establish a connection to a service on a remote server. Apple dropped the telnet and ftp client in macOS High Sierra. First I was…
Authenticate sudo with TouchID on a MacBook Pro
If you own a Mac equipped with a touch bar and you use the command line and sudo often, you can enable the TouchID of your Mac to authenticate yourself.…
pcap filter
tcpdump and ngrep are both based on libpcap. Therefore both use the same filter expressions. Here is the manual page of the ⇒pcap filter expression. These filter expressions are also…
Network grep “ngrep” on macOS
Sometimes it is very practical to use grep, to find a specific regular expression in some files. It would also be very practical to have the grep functionality on the…