Category Archives: Linux

Stuff about Linux

Linux: Switch keyboard layout in (bash) shell

Hi,

linux allows to change the keybaord layout “on the fly”.
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rsyslog: Configure TLS/SSL

Hi,

to setup a remote syslog server TLS encryption is strongly recommended.

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Debian: Enable apt debug logging

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for troubleshooting purposes (i.e. certificate issues) it is sometimes to enable the debug logging of apt.
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openssl: Verifiy failed with error 3 at 0 depth lookup: unable to get certificate CRL

Hi,

openssl can verify certificates against the root CA/intermediate CA chain and also can check a crl list if a certificate is revoked.
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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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