Charly's Column The Sysadmin’s Daily Grind: ArpalertDec 01, 2006
Corporate 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 »
Charly's Column The Sysadmin’s Daily Grind: EthtoolApr 01, 2006
A 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 patchMar 01, 2006
If 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 attacksSep 01, 2005
It 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: SmokepingMay 01, 2005
If 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 »
Version 16 of the popular Linux desktop reveals new tools, edge-snapping, and performance improvements.
Symantec says Linux-Darlioz burrows in through PHP.
Dell renews its quest for the ultimate developer machine.
Innovative back door looks like normal SSH traffic.
One of CeBITs most successful forums opens the new year with a new name. The popular Open Source Forum continues in 2014 under the name Special Conference: Open Source. This year, the forum will be bigger and offer a wider range of possibilities for sponsors.
New release offers better graphics drivers and expands filesystem support.
New mail protocol will shut out the NSA and prevent snooping on metadata.
A new web application helps users visualize distributed denial-of-service attacks.
Ubuntu 13.10 takes a step toward convergence, with lots of mobility, but Mir only partly here.
Galileo board is targeted to embedded developers and educational institutions.