I setup my iptable and am wondering how secure I am.
The article was a bare bones no frills type and I need to
store sensitive data in my DB on the server.

this is my iptable:
Chain INPUT (policy DROP)
target prot opt source destination
ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED
ACCEPT all -- anywhere anywhere
ACCEPT tcp -- anywhere anywhere tcp dpt:54321
ACCEPT tcp -- anywhere anywhere multiport dports www,https
tcp -- anywhere anywhere tcp dpt:ftp
ACCEPT icmp -- anywhere anywhere icmp echo-request
Chain FORWARD (policy DROP)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination

I will need to eventually setup email for those I host for, and of course I need to be able to connect via ftp so I can upload my web files to the server.
any insight would be appreciated

thank You