Kategorie: Security

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 […]

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: […]

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