hey dudes!

I got some problemes about packet forwarding.

Actually, I installed win xp and centos6(64bit-based) on Vmware9.

And I schemed netowrk environment followings.


win xp----|vmnet3|----eth0_centos_eth1----|bridge|----Router

more details,


win xp's IP adress : 192.168.128.130


eth0 on centos's IP address : 192.168.128.131

eth1 on centos's IP address : 192.168.0.16

Router's internal gateway's IP address : 192.168.0.1


anyway, here's my goal

-> win xp shoulde be able to connect any external network clients.


So, I configured centos's network Interface-eth1 to follwoings.


/etc/sysctl.conf

net.ipv4.ip_forwarding=1


At last, I made centos forward packet which is input from win xp

to external network.


then I did a ping test on win xp to router's internal gateway

first.


But it couldn't make it .....yea it also couldn't suceed ping

external clients out of router.


you know, I had got message from centos' eth0.


In win_xp's cmd, I can see following message

->reply from 192.168.127.131 : Destination hsot unreachable.

and in centos, I used tcpdump to confrim what message apears.

centos' eth0 says,

->192.168.128.131.>192.168.128.130: ICMP host 192.168.0.1 unreachable - admin prohibitted


and then I thoght centos' firewall have problems.

so, I disabled firewall. I did ping test on win xp again.

but, I couldn't get any message....


what's the problem in this situation?

Please help me sove this matter. wating for your helps.

Have you configured Router with a route to the vmnet3 network?

yea I did....

Can you ping the router from the CentOS box?
Do you have ACLs on the router interface?