Hi,
on newer debian/ubuntu system the “apt-key” (/etc/apt/trusted.gpg.d and /etc/apt/gpgtrusted.gpg) should no longer be used because in newer debian versions and is marked as insecure because a (correct) signed package is accepted from all respositories and should only be accepted from the original publisher.
Continue reading Debian: apt error NO_PUBKEY
Hi,
to setup a remote syslog server TLS encryption is strongly recommended.
Hi,
for troubleshooting purposes (i.e. certificate issues) it is sometimes to enable the debug logging of apt.
Continue reading Debian: Enable apt debug logging
Hi,
there is an issue in the openssl libraries < version 3 that an crl check of an certificate fails if the file size of the crl file is greater then 100kB.
Continue reading Debian: Disable certificate crl check for apt
Hi,
for server systems it isn’t necessary to start a graphical user interface because they usually run headless.
Continue reading Linux/systemd: Set default runlevel to console