Category: UNIX networking
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macOS AKA OSX domain-specific DNS servers (/etc/resolver)
If you VPN to work from home (or even VPN to home from work, you may have issues resolving hostnames. It’s trivial to solve in macOS AKA OSX. E.g.: $ cat /etc/resolver/fritz.boxnameserver 10.0.4.1 The server 10.0.4.1 (e.g. my fritz.box) will do the nameserving for the domain fritz.box, as soon as macOS can see the file.…
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how to test ports – Telnet, Expect, Bash, Netcat, Nmap
For “security reasons” telnet and nmap are not included in the basic set of utilities present on a production server. And why would you install software, that you usually don’t need there? But occasionally these tools are needed and should be available for installation. I certainly like telnet and nmap for the described purposes.