Category: Linux

Topics related to the Linux operating system.

Ubuntu Certbot Update

With the upcoming deprecation of TLS-SNI-01, Let’s Encrypt certificate renewals may start breaking for some clients. For more information regarding the TLS-SNI-01 ACME protocol deprecation see Bulletproof TLS Newsletter #37. As per Let’s Encrypt’s...

Disable IPv6 in Ubuntu

IPv6 may not always be required and some administrators may elect to disable it on their servers. Here is how to disable IPv6 in Ubuntu Linux. To learn more about IPv6 please visit Wikipedia.  ...

Easily Change GRUB Boot Order in Kali Linux

When Windows is installed on top of Kali Linux, the Linux GRUB has Kali configured as the default boot operating system. This can get quite bothersome for those of us who boot into Windows more...