[CentOS] Forward http traffic

Tue Jan 7 12:28:33 UTC 2014
Nikolaos Milas <nmilas at noa.gr>

Hello,

On CentOS 6.5 x86_64 I have (/etc/sysconfig/iptables):

*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:RH-Firewall-1-INPUT - [0:0]
-A INPUT -j RH-Firewall-1-INPUT
-A FORWARD -j RH-Firewall-1-INPUT
-A RH-Firewall-1-INPUT -i lo -j ACCEPT
-A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -s 10.10.10.0/24 -m tcp -p 
tcp --dport 22 -j ACCEPT
-A RH-Firewall-1-INPUT -s 10.10.10.0/24 -m state --state NEW -m tcp -p 
tcp --dport 80 -j ACCEPT
-A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited
COMMIT

Now, I want to forward all http traffic coming in from 10.250.250.0/24, 
at local port 8080, to 2 particular IP Addresses (port 80). Is it enough 
to prepend (to the above) the following:

*nat
:PREROUTING ACCEPT [0:0]
:POSTROUTING ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A PREROUTING -s 10.250.250.0/24 -p tcp --dport 8080 -j DNAT 
--to-destination xxx.xxx.xxx.xxx:80
-A PREROUTING -s 10.250.250.0/24 -p tcp --dport 8080 -j DNAT 
--to-destination yyy.yyy.yyy.yyy:80
COMMIT

...?

Please advise!

Thanks in advance,
Nick