Managing a number of Linux servers and keeping them secure can be a challenge. Certain tools can make the life of an admin a lot easier. To ensure an ssh daemon complies with a desired security configuration the admin can use a scanner … Continue reading
Debug SSH Connection issue in key exchange
Securing a server means hardening the SSH server settings, but doing so can also cause issues with ssh clients. Finding the cipher or algorithm causing a failled connection can be tricky. Depending on the client used, the error message might be very … Continue reading
Automount a luks encrypted volume on system start
Linux supports encrypted volumes with luks. When a luks encrypted volume is set up during installation to be booted from, the volume is already configured and set up. When an encrypted volume is set up afterwards, the volume remains locked until … Continue reading
Posted in Encryption, Linux Administration, Security
Tagged cryptsetup, crypttab, encryption, fstab, LinuxMint, luks, ubuntu
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Review: The perfect duo – powerbank and solar charger
Do you live in a sunny country? Want to use the sun’s energy to charge your mobile devices? This duo of a solar charger and a USB powerbank will let you harvest the sun and charge your devices whenever you … Continue reading
Posted in Review
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Harden SSH server settings
Many Linux Administrators use ssh on a daily basis. Many of the ssh servers are in their default configuration. Not changing the default configuration puts the security of the server at risk. That is why it is important to follow a few … Continue reading
Manage photo EXIF data via terminal
Additional to the GUI tools that are available to manage EXIF information in photos, there are also command line tools that can do this as well. Command line utilities allow you to script the processing of photos. The following shows … Continue reading
Get vim to paste content without modification
When content is pasted into vim, it tries to automatically detect and re-indent the content. This works most of the time but sometimes it does not, and that can be annoying, but vim would not be so popular if there wasn’t … Continue reading
Posted in Linux Administration
Tagged shell, vim
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Change Date and Time format for LinuxMint panel applet
Modern Linux distributions like LinuxMint provide a nice GUI which is highly configurable. There are so many options and possibilities that most users new to it cannot find where things are configured. Finding the right options means taking some time to … Continue reading
Posted in Linux Administration
Tagged date, format, LinuxMint, time
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Manage SSH-keys with the SSH-agent
Many webservices generate ssh keys to access their service. With the amount of services the number of SSH keys grows. To avoid dealing with the keys in the command line and the ssh_config(5), you can simply add the ssh-key to the … Continue reading
Posted in Linux Administration, Security
Tagged SSH, ssh key, ssh-agent
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Create a luks encrypted partition on Linux Mint
Encryption is not only for someone who has something to hide. There are simple concerns like a lost or stolen laptop that justify a full disk encryption. There are only a few steps necessary to create a encrypted partition. In … Continue reading
Posted in Encryption, Linux Administration, Security
Tagged cryptsetup, encryption, luks
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