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 »
Longtime litigator revives an ancient suit against IBM alleging Linux infringes on Unix copyrights.
Specialty distro keeps the focus on advanced learning.
Security breached at home sites of the CMS project.
Lead Java developer vows policy changes and more attention to fixing problems.
Vendor D-Wave scores big with a sale to NASA's Quantum Intelligence Lab.
Richard Stallman calls for the W3C to remain independent of vendor interests.
The new release supports nine architectures, 73 human languages, and zero non-Free components.