What is Big Data and Hadoop? In 7 minutes

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IPTABLES: Prevent a server from spamming out

Your server can somehow be compromised and used to spam (email): if it’s a cloud or a dedicated server subscribed from a decent provider, they will notify you about that (i speak from experience here :-))

Any way to prevent yourself from that or to block back in case you are facing it already, here are simple iptables rules Lire la suite

Iptables: how to block bunch of countries to attack your server

This weekend a friend of mine, owner of  a web site dev-hosting company told me about cPanel regular emails alerts regarding recurrent SSH failed login attempts on one of his customers servers from few IPs located in 3 countries.

He asked me about a way to block certain countries via iptables.  I wrote something that did the trick Lire la suite

OpenSource Asterisk-JMSConnector Application 1.0-GA

Telephony and IT integration/coupling is surely something that can bring power or add values in some businesses (Customers Services, Hotlines, Contact Centers, Ordering lines, CRMs, Banks, Political Campaigns, Marketing, Leads Generations/Validations…)

Asterisk being the most open source IPBX used so far, is part of many architectures: small or big, single or clustered…

Here is how Asterisk-JMSConnector fits inside this picture….

Lire la suite

Reblog: 5 error-tracking tools for Java DevOps

I found this article very interesting in my readings. Plus i was not aware about those tools:

http://www.javacodegeeks.com/2014/09/5-error-tracking-tools-java-developers-should-know.html

These tools  are about getting aware of errors occurring inside your app at runtime.

Some good tools to consider at devtime (based on static code analysis) are:
-FindBugs http://findbugs.sourceforge.net/manual/eclipse.html
-PMD http://pmd.sourceforge.net/eclipse/
Both plugins for Eclipse