{"id":1362,"date":"2020-06-18T15:15:31","date_gmt":"2020-06-18T13:15:31","guid":{"rendered":"https:\/\/blog.mhasin.eu\/?p=1362"},"modified":"2020-06-18T15:15:32","modified_gmt":"2020-06-18T13:15:32","slug":"iptables-persistent-simple-firewall","status":"publish","type":"post","link":"https:\/\/blog.mhasin.eu\/?p=1362","title":{"rendered":"iptables persistent simple firewall"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Instalacia balika:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>apt install iptables-persistent<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">pravidla su v zlozke \/etc\/iptables\/rules.v{4,6}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pravidla pre IPv4 su v zlozke:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/etc\/iptables\/rules.v4<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Predvoelen pravidla su:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># Generated by xtables-save v1.8.2 on Thu Jun 18 15:11:04 2020\n*filter\n:INPUT ACCEPT [0:0]\n:FORWARD ACCEPT [0:0]\n:OUTPUT ACCEPT [0:0]\nCOMMIT\n# Completed on Thu Jun 18 15:11:04 2020<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Tito pravidla je potrebne nahradit:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># Generated by xtables-save v1.8.2 on Thu Jun 18 13:14:47 2020\n*filter\n:INPUT DROP [0:0]\n:FORWARD DROP [0:0]\n:OUTPUT ACCEPT [0:0]\n# povol nadviazane spojenia ktore vyokonava server\n-A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT\n# povole localhost\n-A INPUT -s 127.0.0.0\/8 -j ACCEPT\n#Povolenie sam na seba kvoli proxy\n-A INPUT -s 192.168.3.31 -d 192.168.3.31 -j ACCEPT\n\n#Povolenie portov \n# UDP\n-A INPUT -s 192.168.3.179 -p udp --dport 6514 -j ACCEPT\n# tcp\n-A INPUT -s 192.168.3.179 -p tcp --dport 6514 -j ACCEPT\n\n#Povolenie IP rnge\n-A INPUT -s 192.168.3.0\/24 -j ACCEPT\n\nCOMMIT\n# Completed on Thu Jun 18 13:14:47 2020<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n<div class=\"pdf24Plugin-cp\"> \t<form name=\"pdf24Form0\" method=\"post\" action=\"https:\/\/doc2pdf.pdf24.org\/wordpress.php\" target=\"pdf24PopWin\" onsubmit=\"var pdf24Win = window.open('about:blank', 'pdf24PopWin', 'resizable=yes,scrollbars=yes,width=600,height=250,left='+(screen.width\/2-300)+',top='+(screen.height\/3-125)+''); 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