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Linux iptables xtables-addons GeoIP examples

Monday, September 19th, 2011

Some simple examples using xtables-addons GeoIP rules.  See other firewall-related posts for iptables background information and additional examples using custom chains with iptables.  The examples below require that iptables and  xtables-addons be installed and you must generate the ‘packed’ lookup-tables from GeoIP data-sets.  These rules were tested using Fedora 13 (Red Hat Linux) with xtables-addons Continue reading →

Linux GeoIP Firewall via iptables (xtables-addons)

Tuesday, September 13th, 2011

Getting xtables-addons  with GeoIP working under Fedora (Red Hat) Linux was a bit of a hassle…  Note – xtables-addons is NOT standard (yet) for Linux iptables; it is considered to be experimental so installing it on a production system may not be appropriate.  I  hope that the GeoIP addon will soon become a standard feature. Continue reading →

Is ‘dynamic security’ enough?

Wednesday, May 18th, 2011

Dynamic Security – simply defined here as monitoring both perimeter traffic as well as internal traffic and reacting based on rules/configuration & perhaps  behaviour(s).  Is this enough? During the spring of 2011 we have seen quite a number of news stories covering personal privacy and cell phone ‘location data‘.  So who/what else about you is Continue reading →

Epsilon breach: e-mail marketing issues

Friday, April 29th, 2011

In  the out-source era we continue to see it’s not my problem or it was a problem with one of our vendors…  So, which company is responsible for data that you share with them?  At some point we all need to ask ourselves, “Who are we doing business with?” Perhaps we should also ask, “Who Continue reading →

Securing WordPress 3.x Multi-Site

Sunday, February 6th, 2011

WordPress 3.x is a dual-use Internet Publishing solution – use it for a single domain, host multiple sub-domains (or sub-folders) or host multiple, unique domains. Start with the foundation before getting into WordPress specific solutions – are each of your server base components up-to-date and secure as needed/possible?: Apache security: base configuration using a best Continue reading →

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