1.0Zinea InfoSec Bloghttps://zineausa.com/blogZineahttps://zineausa.com/blog/author/serialenabler/rich600338<blockquote class="wp-embedded-content" data-secret="xcntTEyo81"><a href="https://zineausa.com/blog/2018/07/ccna-certification/">CCNA Certification</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://zineausa.com/blog/2018/07/ccna-certification/embed/#?secret=xcntTEyo81" width="600" height="338" title="“CCNA Certification” — Zinea InfoSec Blog" data-secret="xcntTEyo81" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /* <![CDATA[ */ /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://zineausa.com/blog/wp-includes/js/wp-embed.min.js /* ]]> */ </script> My first step was getting the Cisco Certified Network Associate (CCNA Routing and Switching) certification to get fundamental network knowledge, to really understand all the layers of the OSI model, and to understand how packets flow, how DNS resolves, and how firewalls/routers work at a fundamental level. Looking back, I still think this certification was […]https://learningnetworkstore.cisco.com/upload/product/shopbanner_certprep_assoc_CCNA_routeswitch.jpg