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When I look at iptables, i can see lots of rules as default, but when I do iptables -L, it shows only the following line only.  Am I missing some thing?

DROP       tcp  --  192.168.112.25       anywhere            tcp dpt:ssh



[root@server3 init.d]# cat  /etc/sysconfig/iptables
# Generated by iptables-save v1.4.7 on Sun Aug  4 00:11:30 2013
*nat
:PREROUTING ACCEPT [134:10773]
:POSTROUTING ACCEPT [333:35516]
:OUTPUT ACCEPT [350:37659]
-A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -p tcp -j MASQUERADE --to-ports 1024-65535
-A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -p udp -j MASQUERADE --to-ports 1024-65535
-A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -j MASQUERADE
COMMIT
# Completed on Sun Aug  4 00:11:30 2013
# Generated by iptables-save v1.4.7 on Sun Aug  4 00:11:30 2013
*mangle
:PREROUTING ACCEPT [57821:26615023]
:INPUT ACCEPT [57814:26614317]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [50045:72013933]
:POSTROUTING ACCEPT [50501:72086655]
-A POSTROUTING -o virbr0 -p udp -m udp --dport 68 -j CHECKSUM --checksum-fill
COMMIT
# Completed on Sun Aug  4 00:11:30 2013
# Generated by iptables-save v1.4.7 on Sun Aug  4 00:11:30 2013
*filter
:INPUT ACCEPT [89:7135]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [75:7234]
-A INPUT -s 192.168.112.25/32 -p tcp -m tcp --dport 22 -j DROP
COMMIT
# Completed on Sun Aug  4 00:11:30 2013
[root@server3 init.d]# iptables  -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination
DROP       tcp  --  192.168.112.25       anywhere            tcp dpt:ssh

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

How about this ?
iptables -L -n
http://linux.about.com/od/commands/l/blcmdl8_iptable.htm



http://www.cyberciti.biz/faq/redhat-centos-rhel-fedora-iptable-installation/