If you hold a website and use SSL/HTTPS with Certificates theres is often the question should i block Port 80? The most Admins think after the Major Changes of the Browsers to pull first HTTPS Port 443 they can close the HTTP Port 80. But you should NOT do it! Why? most Bots scan at […]
Kategorie: Howto
Howto: Create qrcode image command line
If you need digital bookmarks to share as Pic on social media do: Install qrencode : sudo apt-get install qrencode then as user: qrencode -o qrcode.png 'www.linuxonlinehelp.com My Blog' Result:
Bug: WIFI WICD Network dropped by apparmor randomly
Apparmor prevent by broken Security Profile read Access to Configs of WICD Syslog dmesg Log: apparmor="DENIED" name="/var/lib/wicd/dhclient.conf"…. Solution: sudo nano /etc/apparmor.d/sbin.dhclient add after „/etc/dhcp/** r,“: /var/lib/wicd/dhclient.conf r, to enable access to /var/lib/wicd/dhclient.conf which is able to read updates
Reuse OLD PCs for IPFS File Cloud Blockchain
What is IPFS = Internet Planetary File System (peer-to peer) ? It’s a decentral sharing Ecosystem for Files on Blockchain Technology Warning it is NOT anonymous! The ipfs command offers display commands to follow back the hosting & mirroring IP’s! Why is it a current Hype? Cause it offers many Solutions for saving files into […]
Ubuntu Debian MAJOR Bug: WIFI randomly disconnected at 100% Signal no internet
Ubuntu Debian (All Linux OS) Bug: WIFI randomly disconnected at 100% Signal no internet System : ubuntu 18.04 LTS Kernel 5.7 amd64 Router openwrt LAN/WIFI: disabled ipv6 dhcp ! Bug: Wifi lost internet connection randomly on 100% Signal beside the Gateway-Router! Problem: No Error Logs, no Kernel Messages Tested: Replaced Mini-PCI WIFI 5/6 Cards various […]
Debian Ubuntu: CEWE Fotobuch installieren unter 64bit 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 […]
Firestick VPN disable GEOBLOCKING Android
In Europe most DSL Routers don’t support VPN/OPENVPN by default this a Workaround without hacking any Firmware or Chrooting ! What you need: openvpn.apk Client client.ovpn Config File Linux PC with adb tools, Ubuntu Live CD works also without Install! AWS or other vServer on the Cloud outside EU (i testet AWS-Lightsail for free!) 15Mins […]
Apache2 evasive Problems with WordPress
If you use Apache2 / Apache24 and anti-hammering tools like the Modul evasive and security2 as addon fail2ban than you can fail blogging. Problems: Apache2 Module „evasive“ must be fine tuned for WordPress go /etc/apache2/ if you use default enabled auto-safe drafts of posts can let you look like a Attacker so disable auto save […]
Major Tools for your IT Systems
A must „USE“ in these insecure days: nmap Portscan Tool use nmap -PN IP-Address to check failed Firewall Settings! arp-scan Network Scan to find active devices iftop to detect traffic and used Ports on a physical network Interface! ps aux show active processes on a Linux System htop more human friendly Process Monitor iotop human […]
Stop using Twitter …
Today i closed my Twitter Timeline cause: i don’t see any advantages of this Social Media Tool too much ads posted in my timeline too much commercial waste posted in my timeline no Filter for „Area Europe“ available only Worldwide and Germany too much politics trash posted .. be independet from commercial social media tools […]