Reset iptables rules (IPv4, IPv6)

iptables-reset.sh

iptables -P INPUT ACCEPT && \
iptables -P FORWARD ACCEPT && \
iptables -P OUTPUT ACCEPT && \
iptables -F INPUT && \
iptables -F OUTPUT && \
iptables -F FORWARD && \
iptables -F && \
iptables -t nat -F && \
iptables -t mangle -F && \
iptables -X && \
iptables -t nat -X && \
iptables -t mangle -X

reset-iptables.md

Clear iptables rules

• -F : Deleting (flushing) all the rules.
• -X : Delete chain.
• -t table_name : Select table (called nat or mangle) and delete/flush rules.
• -P : Set the default policy (such as DROP, REJECT, or ACCEPT).

# reset the default policies in the filter table
iptables -P INPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -P OUTPUT ACCEPT
iptables -F INPUT
iptables -F OUTPUT
iptables -F FORWARD
iptables -F
iptables -t nat -F
iptables -t mangle -F
iptables -X
iptables -t nat -X
iptables -t mangle -X

Clear ip6tables rules

ip6tables -P INPUT ACCEPT
ip6tables -P FORWARD ACCEPT
ip6tables -P OUTPUT ACCEPT
ip6tables -F INPUT
ip6tables -F OUTPUT
ip6tables -F FORWARD
ip6tables -F
ip6tables -t nat -F
ip6tables -t mangle -F
ip6tables -X
ip6tables -t nat -X
ip6tables -t mangle -X