Tag Archives: linux

Debian: Disable certificate crl check for apt

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.

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Linux: Place own/custom certificates in /etc/ssl/certs

Hi,

sometimes it is necessary to add an own root/intermediate CA top your machine CA store.

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Linux: Add a user with a disabled password

Hi,

these commands adds a user with a disabled password:
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Linux/systemd: Set default runlevel to console

Hi,

for server systems it isn’t necessary to start a graphical user interface because they usually run headless.
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Linux: Load iptables/firewall rules at startup

Hi,

when you set up firewall rules by iptables these rule are not persistent. This means they are volatile and will be deleted at reboot time.
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