{"id":6484,"date":"2018-12-13T16:27:10","date_gmt":"2018-12-13T16:27:10","guid":{"rendered":"https:\/\/www.siliconhouse.net\/support\/?page_id=6484"},"modified":"2018-12-13T16:27:10","modified_gmt":"2018-12-13T16:27:10","slug":"increase-deny-ip-limit-csf-firewall","status":"publish","type":"page","link":"https:\/\/www.siliconhouse.net\/support\/dedicated-servers\/linux-dedicated-server-hosting\/increase-deny-ip-limit-csf-firewall\/","title":{"rendered":"How to Increase DENY IP LIMIT in CSF Firewall?"},"content":{"rendered":"<div class=\"dedicated_server_hosting_features_center\">\n<div class=\"reseller_web_hosting_support_navigation\"><aside id=\"bcn_widget-2\" class=\"widget widget_breadcrumb_navxt amr_widget\"><span property=\"itemListElement\" typeof=\"ListItem\"><a property=\"item\" typeof=\"WebPage\" title=\"Go to Silicon House - Reseller Hosting - Dedicated Servers - Cloud.\" href=\"https:\/\/www.siliconhouse.net\/support\" class=\"home\"><span property=\"name\" style=\"color: #232323\"><b>Support Home<\/b><\/span><\/a><meta property=\"position\" content=\"1\"><\/span><\/aside><\/div>\n<div class=\"dedicated_server_hosting_features\">\n<p><a href=\"https:\/\/www.siliconhouse.net\/\">Silicon House<\/a> <a href=\"https:\/\/www.siliconhouse.net\/dedicated-servers-managed\">Linux Dedicated Servers<\/a> are powered by free Unlimited WHM and Unlimited cPanel. Dedicated Servers comes with full root access where you will be get a control to make any changes at anytime. In this you can able to Increase DENY IP LIMIT in CSF Firewall.<\/p>\n<p><aside id=\"text-16\" class=\"widget widget_text amr_widget\">\t\t\t<div class=\"textwidget\"><div class=\"reseller_web_hosting_support_advts\">\r\n\r\n<div class=\"reseller_web_hosting_support_advts_left\">\r\n<a href=\"https:\/\/www.siliconhouse.net\/linux-reseller-web-hosting-india\" target=\"_blank\"><img decoding=\"async\" border=\"0\" src=\"https:\/\/www.siliconhouse.net\/wp-content\/uploads\/2018\/06\/336X280-saffron-unlimited-499-kickstart.gif\" width=\"336\" height=\"280\" alt=\"Reseller Hosting Special Offer\"><\/a>\r\n<\/div>\r\n\r\n<div class=\"reseller_web_hosting_support_advts_right\">\r\n<a href=\"https:\/\/www.siliconhouse.net\/linux-cloud-server-hosting-india\" target=\"_blank\"><img decoding=\"async\" border=\"0\" src=\"https:\/\/www.siliconhouse.net\/wp-content\/uploads\/2018\/06\/336X280-purple-enterprise-cloud-stak-19.jpg\" width=\"336\" height=\"280\" alt=\"Enterprise Cloud Stack\"><\/a>\r\n<\/div>\r\n\r\n<\/div><\/div>\n\t\t<\/aside><br \/>\n<aside id=\"text-20\" class=\"extendedwopts-md-center widget widget_text amr_widget\">\t\t\t<div class=\"textwidget\"><div class=\"reseller_web_hosting_support_advts\">\r\n<div class=\"reseller_web_hosting_support_advts_left\">\r\n<img decoding=\"async\" border=\"0\" src=\"http:\/\/www.siliconhouse.net\/support\/wp-content\/uploads\/2016\/12\/reseller-hosting-249-offer.gif\" width=\"320\" height=\"100\" alt=\"Reseller Hosting Special Offer\">\r\n<\/div>\r\n\r\n<div class=\"reseller_web_hosting_support_advts_right\">\r\n<img decoding=\"async\" border=\"0\" src=\"http:\/\/www.siliconhouse.net\/support\/wp-content\/uploads\/2016\/12\/reseller-hosting-249-offer.gif\" width=\"320\" height=\"100\" alt=\"Reseller Hosting Special Offer\">\r\n<\/div>\r\n\r\n<\/div><\/div>\n\t\t<\/aside><\/p>\n<div class=\"dedicated_server_hosting_features\">\n<p>A firewall is a system that provides network security by filtering incoming and outgoing network traffic based on a set of user-defined rules. Firewall will help to block the IP&#8217;s which is matched against firewall rules and the blocked IP&#8217;s will be stored in &#8220;Firewall Deny IP&#8217;s&#8221; and &#8220;Temporary IP Entries&#8221;.<\/p>\n<p>In CSF firewall, We can set the limit that how much IP&#8217;s can block in the server in the above fields. Also old IP addresses will be automatically removed from &#8220;Firewall Deny IP&#8217;s&#8221; and &#8220;Temporary IP Entries&#8221; file when the &#8220;DENY_IP_LIMIT&#8221; and &#8220;DENY_TEMP_IP_LIMIT&#8221; is reached.<\/p>\n<p>Kindly refer the below procedure to Increase DENY IP LIMIT in CSF Firewall:<\/p>\n<p>1. <a href=\"https:\/\/www.siliconhouse.net\/support\/dedicated-servers\/linux-dedicated-server-hosting\/login-dedicated-server-whm\/\">Login to the WHM<\/a> as a root<\/p>\n<p>2. Go to &#8220;ConfigServer Security &amp; Firewall&#8221; under Plugins option<\/p>\n<p>3. Click on &#8220;<a href=\"https:\/\/www.siliconhouse.net\/support\/dedicated-servers\/linux-dedicated-server-hosting\/can-change-firewall-settings-dedicated-server\/\">Firewall Configuration<\/a>&#8221; under &#8220;csf \u2013 ConfigServer Firewall&#8221;<\/p>\n<p>4. Choose &#8220;DENY_IP_LIMIT = &#8221; option under &#8220;General Settings&#8221;<\/p>\n<p>5. Now you can change the limitation of &#8220;Firewall Deny IP&#8217;s&#8221; and &#8220;Temporary IP Entries&#8221; in the below field<\/p>\n<p>Example :<\/p>\n<p>DENY_IP_LIMIT = 200<br \/>\nDENY_TEMP_IP_LIMIT = 200<\/p>\n<p>6. Scroll down click on Change<\/p>\n<p>7. It will show as &#8220;Changes saved. You should restart both csf and lfd.&#8221;. After that Click on &#8220;Restart csf+lfd&#8221;<\/p>\n<p>In the above example you can see that DENY_IP_LIMIT is 200 so the oldest IP&#8217;s in &#8220;Firewall Deny IP&#8217;s&#8221; was removed when you tried to add a new IP to deny list more than the limit.<\/p>\n<p>If we increase the limits, CSF will be able to hold more IP address in the above fields. But make sure there is sufficient resources on the server before you increase this value.<\/p>\n<p><strong>ADVANTAGES:<\/strong><\/p>\n<p>If the server is under any attack from different IP address as DOS attack, Increasing the DENY_IP_LIMIT and DENY_TEMP_IP_LIMIT is very helpful.<\/p>\n<p><strong>DISADVANTAGES:<\/strong><\/p>\n<p>If we are setting DENY limit to a very high value, it will slow down the network and websites and it is not advisable<\/p>\n<p><strong>NOTE :<\/strong> Setting DENY_IP_LIMIT to 0 is not recommended and it will disable limiting.<\/p>\n<p>Hope!!\u00a0 Now you know how to Increase DENY IP LIMIT in CSF Firewall<\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Silicon House Linux Dedicated Servers are powered by free Unlimited WHM and Unlimited cPanel. Dedicated Servers comes with full root<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":27,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-6484","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Increase DENY IP LIMIT in CSF Firewall in Linux?<\/title>\n<meta name=\"description\" content=\"Linux Dedicated Servers are powered by free Unlimited WHM and Unlimited cPanel where you can able to Increase DENY IP LIMIT in CSF Firewall.\" \/>\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.siliconhouse.net\/support\/dedicated-servers\/linux-dedicated-server-hosting\/increase-deny-ip-limit-csf-firewall\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Increase DENY IP LIMIT in CSF Firewall in Linux?\" \/>\n<meta property=\"og:description\" content=\"Linux Dedicated Servers are powered by free Unlimited WHM and Unlimited cPanel where you can able to Increase DENY IP LIMIT in CSF Firewall.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.siliconhouse.net\/support\/dedicated-servers\/linux-dedicated-server-hosting\/increase-deny-ip-limit-csf-firewall\/\" \/>\n<meta property=\"og:site_name\" content=\"Silicon House - 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