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--- systems:media_server:secure_the_server:setup_a_firewall [2025/05/31 11:28] – peter
+++ systems:media_server:secure_the_server:setup_a_firewall [2025/05/31 11:34] (current) – peter
@@ Line 1: / Line 1: @@
 ====== Systems - Media Server - Secure the Server - Setup a Firewall ======
+====== Create a firewall-reset script ======
+<file bash /sharewiz/firewall/firewall-reset.sh>
+#!/bin/bash
+#
+# Resets all firewall rules
+echo "Stopping firewall and allowing everyone..."
+#
+# Modify the following settings as required:
+#
+IPTABLES=/sbin/iptables
+#
+# Reset the default policies in the filter table.
+#
+$IPTABLES -P INPUT ACCEPT
+$IPTABLES -P FORWARD ACCEPT
+$IPTABLES -P OUTPUT ACCEPT
+#
+# Reset the default policies in the nat table.
+#
+$IPTABLES -t nat -P PREROUTING ACCEPT
+$IPTABLES -t nat -P POSTROUTING ACCEPT
+$IPTABLES -t nat -P OUTPUT ACCEPT
+#
+# Reset the default policies in the mangle table.
+#
+$IPTABLES -t mangle -P PREROUTING ACCEPT
+$IPTABLES -t mangle -P POSTROUTING ACCEPT
+$IPTABLES -t mangle -P INPUT ACCEPT
+$IPTABLES -t mangle -P OUTPUT ACCEPT
+$IPTABLES -t mangle -P FORWARD ACCEPT
+#
+# Flush all the rules in the filter, nat and mangle tables.
+#
+$IPTABLES -F
+$IPTABLES -t nat -F
+$IPTABLES -t mangle -F
+#
+# Erase all chains that are not default in filter, nat and mangle tables.
+#
+$IPTABLES -X
+$IPTABLES -t nat -X
+$IPTABLES -t mangle -X
+</file>
+<WRAP info>
+**NOTE:** This resets all firewall rules.
+</WRAP>
+----
+====== Create a firewall-reset script ======
+<file bash /sharewiz/firewall/firewall.sh>
+</file>
+----
 ===== Create a systemd service unit file for the firewall =====