Default configuration iptables, how to avoid to be blocked when flushing tables?

I have this base for [tag:iptables] when I have a new server to configure : *filter :INPUT DROP [0:0] :FORWARD DROP [0:0] :OUTPUT ACCEPT [0:0] # Keep state. -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT # Loop device. -A INPUT -i lo -j ACCEPT # Allow PING from remote hosts. -A INPUT -p icmp --icmp-type echo-request -j ACCEPT # allow ssh port 22 -A INPUT -p tcp --dport 22 -j ACCEPT # allow foobar public IP -A INPUT -p tcp -s 9.8.7.6 -j ACCEPT # Allow outgoing trafic -A OUTPUT -p tcp -d 1.2.3.4 -j ACCEPT -A OUTPUT -o enp8s0 -d 0.0.0.0/0 -j ACCEPT COMMIT I load this file with iptable-restore < file. The issue is that when I flush with iptables -F, I get blocked. What I have to do to avoid to be blocked ?