Linux

Mitigate DirtyFrag attack on Linux

8th May 2026

The mitigation is pretty safe, it involves disabling IPSec VPN protocols. source https://www.tomshardware.com/tech-industry/cyber-security/dirty-frag-exploit-gets-root-on-most-linux-machines-since-2017-no-patches-available-no-warning-given-copy-fail-like-vulnerability-had-its-embargo-broken

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Don’t use .local domains for DNS

6th May 2026

Ran into a strange issue don’t name DNS zone ending in .local as that is reserved for mDNS and some strict resolvers won’t look this up on a DNS server….

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Automated Linux Ubuntu patching = Livepatch

18th April 2026

Livepatch is available free for up to 5 machines, for personal use, or evaluation purposes. (Ubuntu you forgot free for Education, c’mon work with me) Otherwise for Production, it is…

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Linux cleanup commands

13th February 2026
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Ubuntu Extend full part

3rd October 2024

Step 1: In VmWare, make the partition larger. i did this while the VM was running with no ill effects. sudo su[sudo] password for hex:root@uwazuh:/home/hex# lsblkNAME MAJ:MIN RM SIZE RO…

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Ubuntu Linux commands i can never remember

1st September 2022

TimeZone:timedatectltimedatectl list-timezonessudo timedatectl set-timezone your_time_zonesudo timedatectl set-timezone America/Toronto Assign all free space to the logical volume: https://packetpushers.net/ubuntu-extend-your-default-lvm-space/ IPv6 Disable:sudo nano /etc/sysctl.confadd following lines:net.ipv6.conf.all.disable_ipv6=1net.ipv6.conf.default.disable_ipv6=1net.ipv6.conf.lo.disable_ipv6=1reboot OR sudo sysctl -p Hostname change: no…

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Tailscale and Kali Linux

16th February 2022

the Tailscale webpage has included ALMOST all the info after installing according to the tailscale website sudo systemctl start tailscaled tailscale up to authenticate visit https://login.tailscale.com/a/somerandomchars don’t forget to use…

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Ubiquiti Unifi on Docker + Portainer

3rd December 2021

Couple notes on setting this up Does work on a Raspberry Pi 3 1GB Make sure you use the 64bit OS, as the docker image for armhf doesn’t exist I…

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Privilege Escalation on modern versions of Linux

11th June 2021

Ubuntu 18+ and a number of other modern distros using Polkit have a vuln that allows privilege escalation to root.a video by the bug’s discoverer shows it’s not that hard…

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Ubuntu Linux commands

28th February 2020

Mostly for my own benefit Make Add-Apt-repository available: apt-get install software-properties-common 1 2 3 Change Hostname:sudo nano /etc/hostnamesudo nano /etc/hosts Turn off IPv6sudo nano /etc/sysctl.confAdd: net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 =…

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