问题
I am trying to open up port on my Ubuntu machine to allow me to connect the Mongo using an external program. I ran this which is the command line to open a new port:
sudo iptables -A INPUT -p tcp --dport 27017 -j ACCEPT
but when I ran this to check if the new rule was there...
sudo netstat -ntlp | grep LISTEN
...the new port wasn't in the list - any ideas?
回答1:
I think the mangodb instance was not started, apart from that ,sudo netstat -ntlp | grep LISTEN gives the list ports that are active are being used now, first start your Mango instance sudo service mongodb start , then run this command sudo netstat -ntlp | grep LISTEN if you find 27017 in the list, then sudo iptables -L chack your iptable rule is added or not. If it is in that list good else, sudo iptables -A INPUT -p tcp --dport 27017 -j ACCEPT
you can get more details on mangodb port and traffic @ http://docs.mongodb.org/manual/tutorial/configure-linux-iptables-firewall/
回答2:
In this case the Mongo config file needed updating to use port 27017. Once I had done this and restarted the service, the new port change was visible on in the list.
来源：https://stackoverflow.com/questions/28788740/opening-a-port-on-ubuntu