From 0fb8ae2285d414d3ac42377501d67e1654684a7e Mon Sep 17 00:00:00 2001
From: slash3b <slash3b@gmail.com>
Date: Sun, 6 Mar 2016 17:50:33 +0200
Subject: [PATCH] iptables: add page

---
 pages/linux/iptables.md | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 pages/linux/iptables.md

diff --git a/pages/linux/iptables.md b/pages/linux/iptables.md
new file mode 100644
index 000000000..ae86e2f69
--- /dev/null
+++ b/pages/linux/iptables.md
@@ -0,0 +1,27 @@
+# iptables
+
+> Program that allows to configure tables, chains and rules provided by the Linux kernel firewall.
+
+- See chains and rules for specific table:
+
+`sudo iptables -t {{table_name}} -vnL`
+
+- Set chain policy rule:
+
+`sudo iptables -p {{chain}} {{rule}}`
+
+- Append rule to chain policy for IP:
+
+`sudo iptables -A {{chain}} -s {{ip}} -j {{rule}}`
+
+- Append rule to chain policy for IP considering protocol and port:
+
+`sudo iptables -A {{chain}} -s {{ip}} -p {{protocol}} --dport {{port}} -j {{rule}}`
+
+- Delete chain rule:
+
+`sudo iptables -D {{chain}} {{rule_line_number}}`
+
+- Savin iptables configuration:
+
+`sudo iptables-save > {{path_to_iptables_file}}`