Tag Archives: sysadmin

Red Hat 5 & Red Hat 6 Enterprise Linux security

Your can make your Red Hat 5 & Red Hat 6 Enterprise Linux machines more secure by hardening the OS and/or disabling IPv6

CloudFlare 2G WordPress backup and VigLink link monetisation

As well as their free-of-charge CDN and web cache CloudFlare have partnered with the following services

and many more web service apps

Free of charge CDN

cloudflare.com/ are offering a free of charge CDN (cloudflare.com/plans) and reverse proxy web cache for web sites

theres even a CloudFlare plugin for WordPress

however be sure to take note of CloudFlare’s T&Cs:

CloudFlare may:

  • Rewrite content in order to hide sensitive information from select visitors to your site.
  • Add cookies to your domain to track visitors, such as those who have successfully passed a CAPTCHA.
  • Add tracking codes or affiliate codes to links that do not previously have tracking or affiliate codes.
  • Add script to your pages to, for example, add services or perform additional performance tracking.
  • Intercept requests determined to be threats and present them with a block page.
  • Other changes to increase performance or security of your website.

CDN References

Be sure to check your DNS settings before 9 Jul 12

blog.opendns.com/2012/05/03/opendns-cloudflare-dnschanger-solution-or-how-to-not-lose-internet-on-july-9/

The FBI have discovered that DNSChanger’s malicious DNS servers were being used to automatically and involuntarily convert the DNS settings of millions of people around the world, then using that control to redirect valid URLs to malicious sites.

fbi.gov/news/stories/2011/november/malware_110911

The FBI took over the servers, but realized fast they couldn’t simply shut them down. To do that would immediately take all infected Internet users offline, as without DNS it’s as though the Internet doesn’t work.

The FBI and other invested groups have campaigned for the remaining estimated 350,000 infected people to switch their DNS proactively to a secure service which infected users will now HAVE to do before 9 Jul 12 !

DNS services that you should you use instead of DNSChangers include:

Your ISPs default DNS settings !

DNS Advantage

  • 156.154.70.1
  • 156.154.71.1

Google DNS

  • 8.8.4.4
  • 8.8.8.8

OpenDNS

  • 208.67.220.220
  • 208.67.222.222

iOS 5.0.1 est arrivé

iOS 5.0.1 has arrived today (11/11/11) and includes battery power and security fixes

iOS 5.0.1 iOS 5.0.1 iOS 5.0.1

fon fun

if you have a fon 2.0g or fun 2.0n you can now experiment with fonosfera beta versions of the firmware

and if you dont have a fon wi-fi hotspot you could turn you windoz pc into one by using bzeek

theres more to stacks than overflows

i’ve been finding quite a few answers to recent technical problems and questions on stackoverflow.com but what i hadnt realised is that there’s more to stack than just overflow ! it turns out that stackexchange.com that owns and runs stackoverflow also runs 68 other Q&A sites including:

all of which are moderated using their theory-of-moderation

IBM devworks knowledge paths

IBM devworks knowledge paths

http://www.ibm.com/developerworks/training/knowledgepath/

IBM devworks knowledge paths are focused learning guides that bring together diverse training resources for IT professionals:

  • How-to articles
  • Free trial software
  • Discussion forums
  • Educational videos and podcasts
  • Hands-on exercises
These resources are specifically chosen by subject matter experts, and arranged in sequence to guide you from conceptual awareness to task mastery.
IBM devworks knowledge paths search

This months knowledge paths training and library articles  include:

M$ Windows Vista cannot connect to WPA Wi-Fi

It turns out that M$ Windows Vista PCs not being able to connect WPA Wi-Fi is a known problem !

http://support.microsoft.com/kb/935222

This problem occurs because the Windows Vista system does not handle unrecognized “Cipher and Authentication Key Management” (AKM) suites when the system is parsing the following information elements: … WPA …