protect mongodb ports with iptables - linux

Question

This is my iptables config:
sudo iptables -L -v
Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
0 0 ACCEPT all -- lo any anywhere anywhere
859 103K ACCEPT all -- any any anywhere anywhere ctstate RELATED,ESTABLISHED
5 260 ACCEPT tcp -- any any anywhere anywhere tcp dpt:ssh
3 230 ACCEPT tcp -- any any anywhere anywhere tcp dpt:27017
4 208 ACCEPT tcp -- any any anywhere anywhere tcp dpt:28017
0 0 ACCEPT all -- any any localhost anywhere
0 0 ACCEPT all -- any any 111.111.111.111 anywhere
0 0 ACCEPT all -- any any 222.222.222.222 anywhere
64 3844 DROP all -- any any anywhere anywhere
Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain OUTPUT (policy ACCEPT 764 packets, 227K bytes)
pkts bytes target prot opt in out source destination
0 0 ACCEPT all -- any any localhost anywhere
0 0 ACCEPT all -- any any 111.111.111.111 anywhere
0 0 ACCEPT all -- any any 222.222.222.222 anywhere
If I write in browser the ip if my mongodb server with port 28017, I can see a promt to enter username and password:
#ip mongodb server
000.000.000.000:28017
I want close mongodb ports to anyone except to these 2 ips:
111.111.111.111
222.222.222.222
How can I do it?

Answer 1

Can you try the following iptables rules
-A INPUT -m state --state NEW -p tcp --destination-port 27017 -s 111.111.111.111 -j ACCEPT
-A INPUT -m state --state NEW -p tcp --destination-port 27017 -s 222.222.222.222 -j ACCEPT
Looks like you forgot to put in the source IP flag.

Answer 2

I have removed of my iptables these two line:
-A INPUT -p tcp -m tcp --dport 27017 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 28017 -j ACCEPT
and now it's not possible access to mongdb ports from any ip.
Thanks

Answer 3

The rules I use for limiting external access to mongo are:
$ sudo iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT tcp -- localhost anywhere tcp dpt:27017
ACCEPT tcp -- localhost anywhere tcp dpt:28017
ACCEPT tcp -- 111.111.111.111 anywhere tcp dpt:27017
ACCEPT tcp -- 222.222.222.222 anywhere tcp dpt:27017
ACCEPT tcp -- 111.111.111.111 anywhere tcp dpt:28017
ACCEPT tcp -- 222.222.222.222 anywhere tcp dpt:28017
DROP tcp -- anywhere anywhere tcp dpt:27017
DROP tcp -- anywhere anywhere tcp dpt:28017
You can add them with
sudo iptables -A INPUT -p tcp -m tcp --dport 27017 -s 127.0.0.1 -j ACCEPT
sudo iptables -A INPUT -p tcp -m tcp --dport 28017 -s 127.0.0.1 -j ACCEPT
sudo iptables -A INPUT -p tcp -m tcp --dport 27017 -s 111.111.111.111 -j ACCEPT
sudo iptables -A INPUT -p tcp -m tcp --dport 27017 -s 222.222.222.222 -j ACCEPT
sudo iptables -A INPUT -p tcp -m tcp --dport 28017 -s 111.111.111.111 -j ACCEPT
sudo iptables -A INPUT -p tcp -m tcp --dport 28017 -s 222.222.222.222 -j ACCEPT
sudo iptables -A INPUT -p tcp -m tcp --dport 27017 -j DROP
sudo iptables -A INPUT -p tcp -m tcp --dport 28017 -j DROP