81 lines
2.6 KiB
Bash
Executable file
81 lines
2.6 KiB
Bash
Executable file
#!/bin/bash
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add_NAT_forwarding() {
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if [ "$#" -ne 6 ]; then
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echo "Usage: $0 <interface_source> <tcp_or_udp> <original_destination_ip> <original_destination_port> <forward_to_ip> <forward_to_port>"
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exit 1
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fi
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interface_source="$1"
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tcp_or_udp="$2"
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original_destination_ip="$3"
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original_destination_port="$4"
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forward_to_ip="$5"
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forward_to_port="$6"
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firewall-cmd --add-rich-rule "rule family=\"ipv4\" destination address=\"$original_destination_ip\" forward-port port=\"$original_destination_port\" protocol=\"$tcp_or_udp\" to-addr=\"$forward_to_ip\" to-port=\"$forward_to_port\"" --permanent > /dev/null
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echo "+ [$interface_source][$tcp_or_udp] $original_destination_ip:$original_destination_port --> $forward_to_ip:$forward_to_port"
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}
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remove_NAT_forwarding() {
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if [ "$#" -ne 6 ]; then
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echo "Usage: $0 <interface_source> <tcp_or_udp> <original_destination_ip> <original_destination_port> <forward_to_ip> <forward_to_port>"
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exit 1
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fi
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interface_source="$1"
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tcp_or_udp="$2"
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original_destination_ip="$3"
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original_destination_port="$4"
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forward_to_ip="$5"
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forward_to_port="$6"
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firewall-cmd --remove-rich-rule "rule family=\"ipv4\" destination address=\"$original_destination_ip\" forward-port port=\"$original_destination_port\" protocol=\"$tcp_or_udp\" to-addr=\"$forward_to_ip\" to-port=\"$forward_to_port\"" --permanent > /dev/null
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echo "- [$interface_source][$tcp_or_udp] $original_destination_ip:$original_destination_port --> $forward_to_ip:$forward_to_port"
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}
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# Actual script
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if [ `id -u` -ne 0 ]; then
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echo "This scripts only runs as root."
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exit 2
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fi
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if [ "$#" -ne 1 ]; then
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echo "Usage: $0 <up/down>"
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exit 1
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fi
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action="$1"
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for rule in "${RULES[@]}"; do
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protocol="tcp"
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if [[ "$rule" == */udp ]]; then
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protocol="udp"
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rule="${rule%/udp}" # Remove "/udp" from the end of the string
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fi
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IFS=":" read -ra parts <<< "$rule"
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port_origin="${parts[0]}"
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forward_port="${parts[1]}"
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# Appeler la fonction appropriée en fonction de l'action spécifiée
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case "$action" in
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"up")
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add_NAT_forwarding "$INTERFACE_SOURCE" "$protocol" "$ORIGINAL_DESTINATION_IP" "$port_origin" "$FORWARD_TO_IP" "$forward_port"
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;;
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"down")
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remove_NAT_forwarding "$INTERFACE_SOURCE" "$protocol" "$ORIGINAL_DESTINATION_IP" "$port_origin" "$FORWARD_TO_IP" "$forward_port"
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;;
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*)
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echo "Invalid action. Use 'up' or 'down'."
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exit 1
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;;
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esac
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done
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firewall-cmd --reload > /dev/null
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echo -e "\nDone! Don't forget to add/remove the rules in the security list."
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