If you need a password creator for your daily needs you can do this with a default tool called openssl / libressl and a small bash script: Howto: open a console open as user a editor like nano or vi with $nano pwcreate.sh insert this: #!/bin/sh /bin/bash -c “for i in {1..20}; do openssl rand […]
Category: IT-Security
Security: Harden DSL Routers and Networks against attacks
Last days there was a high count of news about the Bot Attacks against T-Com Telekom Router devices. To understand the behavior about this up comming security problems you should know following points : Every network supported device can be a goal for a attack ( Routers, Modems, PC, Fridges,IP-TV, IP Switches, IP-Cams…) You have […]
Android: Remove builtin Bloatware without hacking rooting or root-firmware
Last Weeks i got a new Smartphone, it offered 8GB Rom for OS and Apps. Iam not a real fan of rooting, cause i didnt write/change the firmware, i found a other way to tune the System: Dont insert a SIM CARD! After first Boot DONT CREATE a Google Account! Then go i to Apps Manager at […]
Openwrt: Turn older Router into Wifi Accesspoint Repeater Extender Solar Powered
At the Summer Time you need perhaps a Wifi Extender for your Garden?? Solution: TP Link 841/N (low power/Battery 9V/Solar /Type-N-allows external planar Antennas!!), 3600+4300 (USB-NAS/CIFS/SFTP/Classroom Library with USB Strorage) Openwrt 15.XX Calmer as OS with Firewall, Webinterface and REALTIME Monitor for Traffic and Connections! Easy Setup, replace the OS by the TP-Link-Updater, reboot and […]
Ubuntu: Create USB Live System Stick for Live Mode or Emergency Help
For all Users, especially Newbies its VERY helpful to have a Rescue System on a USB Stick if a Major Update/Release Change fails or break the System. To this the Ubuntu-ON-RAM Live System is very useful at public shared PCs for Online Banking etc., cause after every reboot all old Firefox Data are safe deleted!! […]
Security: Webserver HTTPS with Self Signed Certificate Do it yourself in 5 Minutes!!
Today the Point of Security and encrypted Webserver Communication is rolling over every User who hosts own Websites on the Internet. Last decades HTTPS was only used by Online Login Pages like Shops and Banks to verify the Communication between a User PC and the Website. But after January 2015 the most Search Engines like […]
Raspberry Pi: Howto build a Local Network Monitor for Intrusion Logging Watchdog
Today the count of network devices at home networks grows up weekly, cause more and more home devices like freezers, coffee engines, dishwasher and more got builtin wifi interfaces. To have a Control Unit you can use a raspberry pi2 as cheap Network Monitor Logger. The Raspian by default offers builtin free tools, like arp, […]
Owncloud: Howto harden owncloud access with a ssh tunnel and squid
If you want to use a private secure owncloud (WebDAV Space Server) as Backup for all your devices you can harden the access thru a openssh Login with key auth and a squid as relay. Install apache2, php5, mysql-Server, openssh, squid3 config Apache2 to listen on https://localhost:443 setup squid3 and config the Proxy to listen only on localhost:3128 […]
DuckDuckgo: The alternate adfree Search Engine
If you dont like or trust the most known Search Engines on the Internet, then give duckduckgo a chance on your Desktop! Adfree Fast Secure Working like charme Clean Not “controlling” your mind by cookie calculation
Major Webserver Setup Rules: The “must” do!
If you want to setup a fresh secure Webserver then use this list dont ever upload data, files, images on the Webserver who are classified as “secret” setup daily full backup with Cron view daily the system logs, auth, www, errors … setup a local firewall with less opened ports 80,25 .. setup daily automatic […]
Debian Ubuntu Laptop mods for SSD HDD and a full encrypted with luks
Major INFO 06-2015: Do not set tmpfs on ubuntu 15.XX or Systems with systemd!!! This block PC boot !! If you want to setup a Ubuntu/Debian Laptop with a full encrypted HDD use a “alternate” CD/DVD. After Setup you have to change some little Parameters to extend the lifecycle of the SSD Chips disable Swap […]
Security Warning Sicherheitsproblem: Visa Card Model 2013 with RFID Chip
Sicherheitsproblem Visa Karte Modell 2013: Wie auch beim neuen Ausweis mit RFID Chip besitzt die neue Visa Karte einen Funkchip RFID der die Kartennummer per Funk zur Kassen senden kann. Grund wird eine Umstellung des Bezahlvorganges beim Einkauf sein, Missbrauch ist nun also per Hackersoftware und Smartphone denkbar! Quasi Taschendiebstahl auf 10Meter im vorbeigehen! Tip: […]