Charly's Column The Sysadmin’s Daily Grind: Arpalert
Nov 30, 2006Corporate policies prohibit the unauthorized connection of hardware to the company network, threatening dire consequences in the case of non-compliance. Fair enough, but how do you actually go about catching somebody trying to plug an illegal laptop into your Ethernet?
more »Ask Klaus!
Oct 31, 2006more »
Charly's Column The Sysadmin’s Daily Grind: Ethtool
Mar 31, 2006A touchy LAN that plays like a movie diva can spoil any admin’s day. Ethtool to the rescue!
more »Netfilter L7 Blocking protocols at Layer 7 with the L7 patch
Feb 28, 2006If you need a tool for filtering protocols that doesn’t depend on the port, try L7, an IPTables patch that operates through regular expressions.
more »TCP Hijacking Understanding and preventing TCP attacks
Aug 31, 2005It is quite easy to take a TCP connection down using a RST attack, and this risk increases with applications that need long-term connections, such as VPNs, DNS zone transfers, and BGP. We’ll describe how a TCP attack can happen, and we’ll show you some simple techniques for protecting your network.
more »Charly's Column The Sysadmin’s Daily Grind: Smokeping
Apr 30, 2005If you do not receive a response to a ping, or if the response is seriously delayed, you might like to take this as a warning. But who wants to ping all day? You need a ping-based monitoring utility like Smokeping.
more »« Previous 1 2 3
Issue 210/2018
Buy this issue as a PDF
News
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Red Hat Enterprise Linux 7.5 Released
The latest release is focused on hybrid cloud.
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Microsoft Releases a Linux-Based OS
The company is building a new IoT environment powered by Linux.
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Solomon Hykes Leaves Docker
In a surprise move, Solomon Hykes, the creator of Docker has left the company.
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Red Hat Celebrates 25th Anniversary with a New Code Portal
The company announces a GitHub page with links to source code for all its projects
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Gnome 3.28 Released
The latest GNOME rolls out with better contact management and new features for handling virtual machines.
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Install Firefox in a Snap on Linux
Mozilla has picked the Snap package system to deliver its application to Linux users.
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OpenStack Queens Released
The new release comes with new features for mission critical workloads.
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Kali Linux Comes to Windows
The Kali Linux developers even managed to run full blown XFCE desktop via WSL.
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Ubuntu to Start Collecting Some Data with Ubuntu 18.04
It will be an ‘opt-out’ feature.
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CNCF Illuminates Serverless Vision
The Cloud Native Computing Foundation announces a paper describing their model for a serverless ecosystem.