{"id":3654,"date":"2013-10-11T13:22:26","date_gmt":"2013-10-11T13:22:26","guid":{"rendered":"https:\/\/www.techopedia.com\/definition\/stateful-inspection\/"},"modified":"2013-10-11T13:22:26","modified_gmt":"2013-10-11T13:22:26","slug":"stateful-inspection","status":"publish","type":"definition","link":"https:\/\/www.techopedia.com\/definition\/4129\/stateful-inspection","title":{"rendered":"Stateful Inspection"},"content":{"rendered":"<h2><span id=\"what_does_stateful_inspection_mean\">What Does Stateful Inspection Mean?<\/span><\/h2>\n<p>Stateful inspection is a type of packet filtering that helps to control how data packets move through a firewall. <\/p>\n<p>This type of assessment is also called dynamic packet filtering, and represents a progression in how systems monitor packets in order to prevent dangerous incoming traffic from getting through firewall technologies.<\/p>\n<h2><span id=\"techopedia_explains_stateful_inspection\">Techopedia Explains Stateful Inspection<\/span><\/h2>\n<p>Experts contrast stateful inspection or dynamic packet filtering with a prior method called static packet filtering. In static packet filtering, the system only looked at packet headers and IP addresses. Static packet filtering did not address application state information and could not determine whether a packet was an initial message or a response. <\/p>\n<p>In the 1990s, some firms began using dynamic packet filtering. Here, the initial outgoing packets are tracked, in order to create a specialized response access that ensures the response is coming from the host and particular port where the original message was sent. This stricter method for packet filtering ensures a safer environment for firewall-equipped systems.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What Does Stateful Inspection Mean? Stateful inspection is a type of packet filtering that helps to control how data packets move through a firewall. This type of assessment is also called dynamic packet filtering, and represents a progression in how systems monitor packets in order to prevent dangerous incoming traffic from getting through firewall technologies. [&hellip;]<\/p>\n","protected":false},"author":7813,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"_lmt_disableupdate":"","_lmt_disable":"","om_disable_all_campaigns":false,"footnotes":""},"definitioncat":[218],"class_list":["post-3654","definition","type-definition","status-publish","format-standard","hentry","definitioncat-cybersecurity"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.8 (Yoast SEO v23.8) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is Stateful Inspection? - Definition from Techopedia<\/title>\n<meta name=\"description\" content=\"This definition explains the meaning of Stateful Inspection and why it matters.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.techopedia.com\/definition\/4129\/stateful-inspection\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Stateful Inspection\" \/>\n<meta property=\"og:description\" content=\"This definition explains the meaning of Stateful Inspection and why it matters.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.techopedia.com\/definition\/4129\/stateful-inspection\" \/>\n<meta property=\"og:site_name\" content=\"Techopedia\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/techopedia\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@techopedia\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.techopedia.com\/definition\/4129\/stateful-inspection#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.techopedia.com\/definition\/4129\/stateful-inspection\"},\"author\":{\"name\":\"Margaret Rouse\",\"@id\":\"https:\/\/www.techopedia.com\/#\/schema\/person\/f5dd538e31ee352d105b8af36c4268a5\"},\"headline\":\"Stateful Inspection\",\"datePublished\":\"2013-10-11T13:22:26+00:00\",\"dateModified\":\"2013-10-11T13:22:26+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.techopedia.com\/definition\/4129\/stateful-inspection\"},\"wordCount\":170,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.techopedia.com\/#organization\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.techopedia.com\/definition\/4129\/stateful-inspection#respond\"]}],\"articleSection\":\"\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.techopedia.com\/definition\/4129\/stateful-inspection\",\"url\":\"https:\/\/www.techopedia.com\/definition\/4129\/stateful-inspection\",\"name\":\"What is Stateful Inspection? 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