iptables-flush.sh

#!/bin/sh
# Accept all traffic first to avoid ssh lockdown  via iptables firewall rules #
iptables -P INPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -P OUTPUT ACCEPT

# Flush All Iptables Chains/Firewall rules #
iptables -F

# Delete all Iptables Chains #
iptables -X

# Flush all counters too #
iptables -Z
# Flush and delete all nat and  mangle #
iptables -t nat -F
iptables -t nat -X
iptables -t mangle -F
iptables -t mangle -X
iptables -t raw -F
iptables -t raw -X