Iptables port redirecting CentOS 5.3

[Rodrick Brown]

I'm having some difficulties getting port redirection working can anyone
assist? 

 

 

Server Interfaces: 

eth0:10.0.0.1

eth1:192.168.0.1 

 

My server has two interfaces I need to route any request coming into
port 9002 to an internal server running a service on that same port. I
tried using the following settings: 

 

# echo 1 >/proc/sys/net/ipv4/ip_forward 

# iptables -t nat -A PREROUTING -p tcp -d 10.0.0.1 --dport 9002 -j DNAT
--to 192.168.0.17:9002              

# iptables -t nat -A POSTROUTING -o eth1 -d 192.168.0.17 -j SNAT
--to-source 10.0.0.1

 

[root at routerhost ~]# iptables -t nat --list

Chain PREROUTING (policy ACCEPT)

target     prot opt source               destination

DNAT       tcp  --  anywhere           routerhost.domain.com tcp
dpt:dynamid to:192.168.0.17:9002

 

Chain POSTROUTING (policy ACCEPT)

target     prot opt source               destination

SNAT       all  --  anywhere             targethost.domain.com
to:10.0.0.1

 

Chain OUTPUT (policy ACCEPT)

target     prot opt source               destination

 

 

svcprd at nyadmlx01 scripts]$ telnet routerhost 9002

Trying 10.0.0.1...

telnet: connect to address 10.0.0.1: Connection refused

telnet: Unable to connect to remote host: Connection refused

 

 

If anyone could help much will be appreaciated thanks. 

---

Rodrick R. Brown 

Ballista Securities, LLC

120 Wall St. Suite 2400 

P: 646 307 4709

C: 347 702 0012 

F: 646 219-5872

E: rbrown(at)ballistasec.com