Networking Requirements
For regular database connectivity, hosts need to be able to communicate on TCP/27017
/etc/sysconfig/iptables
### MongoDB # siomongo1,2,3 -A SIO-Firewall -m iprange --src-range 172.21.224.205-172.21.224.207 -p tcp -m state --state NEW -m tcp --dport 27017 -j ACCEPT # sioatomic,sioatomic-stage,sioatomic1 -A SIO-Firewall -m iprange --src-range 169.228.224.140-169.228.224.142 -p tcp -m state --state NEW -m tcp --dport 27017 -j ACCEPT