ptunnel: send/receive TCP traffic via ICMP reliably

Yes, it can be useful sometimes. For example, you have access to Wi-Fi network but you’re not allowed to access Internet via TCP/UDP as these protocols are blocked. At the same time ICMP is opened and you can ping everything alive in Internet. So, to check your email just have ptunnel installed and work around the restrictions set by the Wi-Fi network sysadmin easily. Ptunnel is an application that allows […]

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Nagios installation and configuration in SUSE Linux

As we know Nagios is extremely popular open source network monitoring system. It watches hosts across the local area network (LAN) and/or across the Internet, services that you can specify, alerting you when things go bad. The following step-by-step guide written by Novel people (actually by Rainer Brunold) for sure would help if you plan to deploy Nagios monitoring system with Novel SUSE Linux. At least it helped me I […]

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10+ advices BEFORE you rebuild Linux kernel

linux logoMany Linux newbies think that kernel recompilation is inherent and almost necessary thing to do after OS is just installed or some time later. By the following advices I would try to show these fellows in which situations this really makes sense and what to do if one persists :)

1. If you don’t know why you should patch/recompile kernel – DO NOT DO THIS.
2. If your running kernel is smart and supports all necessary hardware, technologies and doesn’t contain critical vulnerabilities – DO NOT REBUILD IT.
3. If you don’t know what are kernel patches and why they are used – DO NOT REBUILD KERNEL.
4. If kernel with needed functionality is available as binary package for your distribution (especially in official repositories) – DO NOT BUILD KERNEL.
5. If you insist, certainly read Kernel HOWTO and notes about kernel recompilation in regards to your distribution.
6. Do change kernel config values only if you know what they mean.
7. Don’t forget to build initrd before rebooting your system.
8. Do not remove workable kernel and make it default in boot loader menu (like grub).
9. Don’t panic if something goes wrong – most probably the same situation happened to thousands people earlier. But sometimes shit happens.
10. Rebuilding procedure usually takes hours depending on hardware you use. BE PATIENT! :)
11 (thanks to Erek Dyskant). Use your distro’s package management system to build kernels whenever possible (like make-kpkg in Debian or rpmbuild in Fedora/RedHat/CentOS)

I really hope this helps and pretty sure you’ll build your “perfect” kernel once ;)

Any further advices are WELCOME!

P.S. Thanks to Stas Kogut for encouraging me to write this post.

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Dell offers new Ubuntu preinstalled laptop XPS M1330

Dell position XPS M1330 as one of the thinnest and lightest notebooks in its class, as really portable notebook (weight is under 4 pounds or 1.8 kg). On January 23, 2008 it was announced that Spain, Germany, France, UK consumers can purchase this notebook with Ubuntu 7.10 Linux pre-installed. As usually announcement was made at Direct2Dell blog: Since we’ve began offering Ubuntu on some consumer systems, two clear areas of […]

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Fun: Windows vs. Linux for toasters

Last week both systems Microsoft Windows Vivid Toasting Technology (VTT) 2008 Starter Edition and Heatu Linux 9.06 (Dainty Toast) were released for modern toasters.

Yesterday Linux Screw has an opportunity to test both and the results were demonstrated at the Annual Bread Valley Conference at Jan 17 2008 in Texas, USA. Reactions were mixed as Heatu Linux 9.06 and Windows VTT went head-to-head.

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