Mac's tech blog — Linux, sysadmin and TLS notes.https://squoggle.com/https://squoggle.com/2024/12/30/linux-mint-22-custom-uefi-lvm-installation/https://squoggle.com/2024/12/30/linux-mint-22-custom-uefi-lvm-installation/Linux Mint's Cinnamon desktop is one of the most productive and visually clean environments. However, its installation process has limitations, such as minMon, 30 Dec 2024 00:00:00 GMTLinuxsecuritytechnologyubuntuwindowshttps://squoggle.com/2024/09/03/tailscale/https://squoggle.com/2024/09/03/tailscale/Build your own VPN.Tue, 03 Sep 2024 00:00:00 GMTtailscalevpnhttps://squoggle.com/2024/09/01/logical-volume-on-nvme-disk/https://squoggle.com/2024/09/01/logical-volume-on-nvme-disk/This blog post is how to configure a new Nvme SSD disk with Logical Volumes, format it and then mount it for use on your Linux system. The OS I'm doing thiSun, 01 Sep 2024 00:00:00 GMTfilesystemLogical Volumelvcreatelvdisplaymappermkfsnvmepvcreatepvdisplayvgcreatevgdisplayhttps://squoggle.com/2024/08/31/linux-mint-22-x/https://squoggle.com/2024/08/31/linux-mint-22-x/These are my notes on configuring Linux Mint 22.x.Sat, 31 Aug 2024 00:00:00 GMTLinuxhttps://squoggle.com/2023/07/24/install-homebrew-on-mac-os/https://squoggle.com/2023/07/24/install-homebrew-on-mac-os/The version of Mac OS I'm working with here is 12.6.6 MontereyMon, 24 Jul 2023 00:00:00 GMThttps://squoggle.com/2023/03/15/how-to-configure-linux-raid/https://squoggle.com/2023/03/15/how-to-configure-linux-raid/Scenario: You have a Linux Server that has a boot drive and two additional hard drives you want to configure in a RAID array as data drives. This How To wiWed, 15 Mar 2023 00:00:00 GMTLinuxmdadmraidhttps://squoggle.com/2023/03/13/how-to-sudo-without-password/https://squoggle.com/2023/03/13/how-to-sudo-without-password/Scenario: You just installed your Lunux Server and you are the only person using the server and you want to sudo without having to type your password all tMon, 13 Mar 2023 00:00:00 GMTLinuxsudosudoershttps://squoggle.com/2023/03/13/ssh-keys/https://squoggle.com/2023/03/13/ssh-keys/Scenario: You just installed your Linux Server now you want to be able to SSH to that server using your SSH Keys so you don't have to authenticate via passMon, 13 Mar 2023 00:00:00 GMTsshssh keyhttps://squoggle.com/2023/03/13/install-and-set-up-ubuntu-22-04-server/https://squoggle.com/2023/03/13/install-and-set-up-ubuntu-22-04-server/This page will walk through what I did to install Ubuntu 22.04 Server for use in my home network.Mon, 13 Mar 2023 00:00:00 GMTLinuxubuntuubuntu 22.04 LTS Serverhttps://squoggle.com/2023/03/11/install-virtualbox-7-0-on-linux-mint-21-x/https://squoggle.com/2023/03/11/install-virtualbox-7-0-on-linux-mint-21-x/This is what I did to install VirtualBox 7.0 on my new Linux Mint 21.x workstation.Sat, 11 Mar 2023 00:00:00 GMTLinuxVirtualBoxhttps://squoggle.com/2023/01/03/linux-mint-21-x/https://squoggle.com/2023/01/03/linux-mint-21-x/These are my notes on configuring Linux Mint 21.x.Tue, 03 Jan 2023 00:00:00 GMThttps://squoggle.com/2022/12/15/online-certificate-status-protocol-ocsp/https://squoggle.com/2022/12/15/online-certificate-status-protocol-ocsp/Online Certificate Status Protocol (OCSP) is an alternative method to Certificate Revocation Lists (CRLs) used to check the validity of digital certificateThu, 15 Dec 2022 00:00:00 GMTcertificateCRLOCSPopensslhttps://squoggle.com/2022/12/15/download-view-and-parse-a-crl-certificate-revocation-list/https://squoggle.com/2022/12/15/download-view-and-parse-a-crl-certificate-revocation-list/Certificate Revocation Lists (CRLs) are used in public key infrastructure (PKI) to identify digital certificates that have been revoked by the certificate Thu, 15 Dec 2022 00:00:00 GMTcertificateCRLOCSPopensslhttps://squoggle.com/2022/11/17/tls-1-2-vs-tls-1-3-exploring-the-key-differences-and-advancements-in-security/https://squoggle.com/2022/11/17/tls-1-2-vs-tls-1-3-exploring-the-key-differences-and-advancements-in-security/Transport Layer Security (TLS) is a widely-used cryptographic protocol that provides secure communications over a computer network, such as the Internet. TThu, 17 Nov 2022 00:00:00 GMTopensslprotocoltlshttps://squoggle.com/2022/10/13/the-tls-1-2-handshake-explained-securing-your-online-data-with-a-twist/https://squoggle.com/2022/10/13/the-tls-1-2-handshake-explained-securing-your-online-data-with-a-twist/Howdy, folks! In today's digital age, the need for secure online communication is more important than ever. And that's where the Transport Layer Security (Thu, 13 Oct 2022 00:00:00 GMTopensslprotocoltlshttps://squoggle.com/2022/09/23/centos-drive-testing/https://squoggle.com/2022/09/23/centos-drive-testing/My Server was making noises that were uncharacteristic. This is how I tested my hard drives for failure.Fri, 23 Sep 2022 00:00:00 GMThttps://squoggle.com/2022/09/01/my-python-notes/https://squoggle.com/2022/09/01/my-python-notes/Python3 is already installed on my Linux distro.Thu, 01 Sep 2022 00:00:00 GMThttps://squoggle.com/2022/04/13/electrum/https://squoggle.com/2022/04/13/electrum/Install the pre-requisites for Electrum:Wed, 13 Apr 2022 00:00:00 GMThttps://squoggle.com/2020/09/27/linux-convert-command/https://squoggle.com/2020/09/27/linux-convert-command/This command requires that the imagemagick package be installed.Sun, 27 Sep 2020 00:00:00 GMThttps://squoggle.com/2020/06/07/create-a-uefi-linux-mint-usb-boot-drive/https://squoggle.com/2020/06/07/create-a-uefi-linux-mint-usb-boot-drive/What you will need:Sun, 07 Jun 2020 00:00:00 GMThttps://squoggle.com/2020/05/04/iptables/https://squoggle.com/2020/05/04/iptables/These are my notes on IP tables. Maybe at some point I may do a complete tutorial or How To but don't hold your breath.Mon, 04 May 2020 00:00:00 GMTiptablesLinuxhttps://squoggle.com/2020/04/30/validate-a-certificates-chain/https://squoggle.com/2020/04/30/validate-a-certificates-chain/You can validate a Certificate's chain by extracting the Authority Key Identifier from the cert like this:Thu, 30 Apr 2020 00:00:00 GMTcertificateopenssltlshttps://squoggle.com/2020/04/01/the-tr-command/https://squoggle.com/2020/04/01/the-tr-command/It's short for "translate" but might be easier to remember thinking of it as "truncate". The man page has this to say about it:Wed, 01 Apr 2020 00:00:00 GMTLinuxtrhttps://squoggle.com/2020/02/14/convert-pem-certificate-to-pfx-or-p12/https://squoggle.com/2020/02/14/convert-pem-certificate-to-pfx-or-p12/The PFX or PKCS12 format is a binary format that stores a server certificate, any intermediate certificates, along with the private key into a single encryFri, 14 Feb 2020 00:00:00 GMTcertificateopensslp12pempfxhttps://squoggle.com/2019/12/05/mount-onedrive-from-linux-mint/https://squoggle.com/2019/12/05/mount-onedrive-from-linux-mint/Don't install Rclone from the standard repository. That version is too old.Thu, 05 Dec 2019 00:00:00 GMTLinuxmountOneDrivehttps://squoggle.com/2019/11/19/citrix-client-on-linux-mint/https://squoggle.com/2019/11/19/citrix-client-on-linux-mint/This is my document for attempting to install the Citrix Workspace App on Linux Mint.Tue, 19 Nov 2019 00:00:00 GMTcitrixLinuxhttps://squoggle.com/2019/11/12/firefox-dns-over-https/https://squoggle.com/2019/11/12/firefox-dns-over-https/You can have all of your DNS queries that originate from Firefox go over HTTPS instead of a plain text query as would happen in a normal DNS query.Tue, 12 Nov 2019 00:00:00 GMTDNSfirefoxhttpshttps://squoggle.com/2019/11/01/linux-mint-19-x/https://squoggle.com/2019/11/01/linux-mint-19-x/These are my notes on Linux Mint 19.x. If you find this and think it is useful, leave a comment and say what you like or don't like. Keep in mind these areFri, 01 Nov 2019 00:00:00 GMTLinuxminthttps://squoggle.com/2019/10/29/sed/https://squoggle.com/2019/10/29/sed/To replace all instances of a certain word in a file with another word:Tue, 29 Oct 2019 00:00:00 GMTLinuxsedhttps://squoggle.com/2019/10/18/gpg/https://squoggle.com/2019/10/18/gpg/Here's my notes on GPGFri, 18 Oct 2019 00:00:00 GMTGPGPGPhttps://squoggle.com/2019/09/16/extract-data-from-a-certificate/https://squoggle.com/2019/09/16/extract-data-from-a-certificate/Using the -text option will give you the full breadth of information:Mon, 16 Sep 2019 00:00:00 GMTcertificateopensslhttps://squoggle.com/2019/09/14/openssl-keys-csrs/https://squoggle.com/2019/09/14/openssl-keys-csrs/You can get the Public Key from a Private Key with something like this:Sat, 14 Sep 2019 00:00:00 GMTcertificatecsrkeyopensslhttps://squoggle.com/2019/09/14/verifying-certs-keys-csrs/https://squoggle.com/2019/09/14/verifying-certs-keys-csrs/Sometimes you will need to verify that a Cert or a CSR belong to a Key. You can do that by checking the MD5 sum of each file.Sat, 14 Sep 2019 00:00:00 GMTcertificatecsrkeyLinuxopenssl