Android enforces DNS over IPV6 “first” to Google Servers as Backup DNS Solution. Google wants to catch EVERY DNS request for their DNS Logging (Spyware)! If any IPV6 DNS Google Server answere’s Android stops DNS over IPV4 of LAN to prevent AD’s BLOCKING!! So no LAN Server is seen on Android Browsers Solution: Disable IPV6 […]
Category: Howto
Linux: Perfect Secure Travel Laptop
If you want to Travel to other Countries (Border-Control), you should know some things: Buy a older Acer Laptop with Micro SSD Harddisk and SATA CDROM Slot Buy a SATA CDROM Adaptor for 10$, open the Laptop and remove the SATA Drive put it into the SATA Adaptor Don’t put Screws into the Laptop to […]
Linux: Raise Security Level by removing Software
If you use Linux you should monthly check which Software you haven’t used last weeks. Background: Every additional Software put Load on your PC Every additional Software uses libraries which can be affected by zero day exploits The Developers doesn’t know all bugs of their dependencies Third parity Software parts like “Github” or “PPA-Sources” they […]
Linux Security: create, mount, lock Luks Encrypted Container Files
Howto create encrypted Container Files for private Photos? REMARKS: EVERY unlocked and active mounted Luks Drive could be read out by attackers! Use long Passwords for Luks! dismount and LOCK unused luks drives/containers if NOT used! Create and mount Script: #!/bin/bash # Script creates 4GB Encrypted File Container, set Password # and mount it to […]
Bug: XDM Login Manager fails start on Boot
Seen on ubuntu 22.04 after do-release-upgrade the xdm Login Manager fails to start, cause a old xdm.pid file hangs from last shutdown on “/run/xdm.pid”. XDM prevent start on a old PID File!! Workaround edit Roots crontab to purge it: sudo crontab -e @reboot rm -rf /run/xdm.pid > /dev/null 2>&1 quit and save with “:wq!” ..reboot
Ubuntu: Chromium install without snap
Howto: Remove all snaps and install chromium on ubuntu 20.XX-24.XX sudo snap remove "package-name" (first all gtk-XX,gnone-xx and all "base+core") sudo apt-get remove snap snapd sudo add-apt-repository ppa:xtradeb/apps (Answere Question ENTER) sudo apt-get update sudo apt-get install chromium
Ubuntu Upgrade Bug: do-release-upgrade breaks cups wrapper filter files for Brother Laser Printers
If you upgrade ubuntu 18.04 to 22.04 via “do-release-upgrade” and you have installed brother laser printer drivers, the whole “cups” printing system will FAIL on print and log missing “filters” at cups log. The “lp” printer output piped into nirvana! Check at /usr/lib/cups/filter/ for the filter files Reinstalls cups by deinstall/reinstall with –purge config option […]
Linux: find files modified in special Month
If you want to free space on Backups you can use find to select a special month: find -newerct "1 Sep 2023" ! -newerct "1 DEC 2023" -delete This command removes files created from 01.Sep.2023 to 01.Dec.2023. ..very useful..
Install Cewe or Rossmann Photobook Software Linux
Problem: Cewe Fotobuch Software wurde für 32bit Linux geschrieben lässt sich daher nach der Installation wegen fehlender Libraries nicht starten. Lösung: Download der Software von http://www.cewe-fotobuch.de/download/ Konsole öffnen (ähnlich Windows Dos Fenster – keine Mausgesteuerte Installation) die Datei Namens setup_Mein_CEWE_Fotobuch.tgz nach /tmp kopieren entpacken des Archives (.tgz) starten des Perlscripts nachträgliche Installation der 32bit Framedateien […]
WordPress get the URL of the Blog View
If you read SEO Errors on Page Web Analytics “Speed Insights” you should: Switch your WordPress Blog to a “Static” Homepage, see section “Read” Create a “Custom” Link for the Blog View at Appearance, then go “Menus” Check after Changes again with SEO Tools !! Following Day’s My custom Blog URL: https://www.linuxonlinehelp.eu/?post_type=post Echo: […]
Seafile Photo Cloud Server Problems (must KNOW)
If you plan to setup a small private Photo Cloud Server and you try to setup “Seafile Community Edition” there are some MAJOR Points (disadvantages) to know: Seafile Community Edition has limited Functions (5 Users) The Photo Files saved on “Data Blocks Files” like on “IPFS” with hash Keys as Names You need a MYSQL […]
Bug: virt-manager NO Keyboard input on VM
If you use Debian as Host System for Virtual Servers the “virt-manager” Package is broken! no keymap input no VM Console Control no VT-Switch possible Fix: run sudo virsh edit “vm-name” remove all “spice” display + audio entrys !! open sudo virt-manager go details and and ADD Display VGA + VGA-Adapter select VNC!! save + […]