Puma：iptables port 3000有问题

Question

使用此配置我遇到了iptables和puma（端口3000）的问题：

Chain INPUT (policy DROP 18 packets, 1982 bytes)
 pkts bytes target     prot opt in     out     source               destination         
   14  1076 ACCEPT     all  --  eth0   any     anywhere             anywhere             state RELATED,ESTABLISHED
    0     0 ACCEPT     tcp  --  eth0   any     anywhere             anywhere             tcp dpt:ssh state NEW,ESTABLISHED
    0     0 ACCEPT     all  --  lo     any     anywhere             anywhere            
    0     0 ACCEPT     tcp  --  any    any     *.*.*.*              anywhere            
    0     0 ACCEPT     tcp  --  any    any     *.*.*.*              anywhere            
    0     0 ACCEPT     tcp  --  any    any     *.*.*.*              anywhere            
    0     0 ACCEPT     tcp  --  any    any     *.*.*.*              anywhere            
   13  6666 ACCEPT     tcp  --  any    any     *.*.*.*              anywhere             tcp dpt:3000 state NEW,ESTABLISHED

Chain FORWARD (policy DROP 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain OUTPUT (policy ACCEPT 31 packets, 2646 bytes)
 pkts bytes target     prot opt in     out     source               destination 

当我尝试从authorize ip访问端口3000时，没有数据正在返回。但是当我使用nmap检查端口3000是否打开时。我在iptables中配置错误了吗？感谢。