Linux

Sometimes a network service is just not behaving the way it should. And the log files do not help you either. Then it is time to use the power of tcpdump and Wireshark to get a deeper look on what is actually happening on the wire. If you have an X11 running on the host […]

Usually modern desktop Linux distributions make it easy to automatically mount external storage media like USB flash sticks. But if all else fails this article may help you. Kernel Compile a kernel with SCSI disk support (CONFIG_BLK_DEV_SD), multiple LUN support (CONFIG_SCSI_MULTI_LUN – otherwise the x-in-1 card reader will not work) and USB storage support (CONFIG_USB_STORAGE). Plug

Bacula is a nifty backup software that is network-capable and stores data in the database for faster retrieval in case you need a certain file back. As a big fan of cheat sheets I created this cheat sheet. What’s up? Which files shall be backed up? show filesets I=Included, E=Excluded What’s the server doing? status

CA is short for Certificate Authority. A CA issues certificates for i.e. email accounts, web sites or Java applets. Actually this only expresses a trust relationship. If you trust the CA then you automatically trust all the certificates that have been issued by the CA. This article helps you set up your own tiny CA using

OpenVPN is an open-source SSL VPN software. It allows you to connect different (private) networks securely over the internet. It’s the perfect alternative to all the crappy SSL VPN appliances that the salesmen desperately try to sell. See my OpenVPN FAQ for additional questions and answers. (This is not the official OpenVPN FAQ. It’s just