iptable udp forword

I have RedHat linux
i want to open up my iptables firewall on to allow UDP Port 123 from
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this line

iptables -A INPUT -p udp -m udp -d -s --dport  123 -j ACCEPT

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mukhtar2tAuthor Commented:
after i excute this line how i can show it is success.
is there any command to show the result

iptables -L

the letter L is in uppercase

root@sonysz:~# iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination        
ACCEPT     udp  --           udp dpt:ntp

that is the result of succes application
mukhtar2tAuthor Commented:
I hope my god give you a good
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