iptables查询没有规则显示问题

iptalbes -L -n

[root@app1 ~]# iptables -L -n
Chain INPUT (policy ACCEPT)
target     prot opt source               destination        

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination        

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination        
[root@app1 ~]#
但是实际我的/etc/sysconfig/iptables内容如下：

# Generated by iptables-save v1.4.7 on Wed Dec 10 19:35:46 2014
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [70134:60241526]
-A INPUT -p tcp -m tcp --dport 80 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 8080 -j ACCEPT
COMMIT
# Completed on Wed Dec 10 19:35:46 2014

就是奇怪，怎么查询不出来。