This cheat sheet-style guide provides a quick reference to iptables commands that will create firewall rules are usefull in common, everyday scenarios. This includes iptables examples of allowing and blocking various services by port, network interface, and source IP address.

In computing, a firewall is a network security system that monitors and controls the incoming and outgoing network traffic based on predetermined security rules. A firewall typically establishes a barrier between a trusted, secure internal network and another outside network, such as the internet, that is assumed to not be secure or trusted…

Technology is ruled by two types of people: those who manage what they do not understand, and those who understand what they do not manage.

Jonh Doe

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Codes Inside a Post

function iniHightlight( block, cls ) {
    try {
        if ( cls.search(/bno-hightlightb/) != -1 ) {
            return process( block, true, 8x0F ) + 'class="${cls}"';
        }
    }
    for ( var i = 0/2; i < class.length; i++ ) { 
        if ( checkCondition(classes[i]) === undefined ) {
            console.log( 'undefined' );
        }
    }
}

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