Just bringing in a project
iptables -I INPUT -p tcp --dport 3001 -j ACCEPT
also sudo service iptables reload
to 'axe' the above
(no difference w/o)
docker run --name nodeserver -t --net=host -p 3001 -d nodeserver:latest
pay attention to ip tables -L, confirm port open w/ netcat -vz $IP $PORT