Is it possible to port forward to LAN rather than a specific destination IP,

i.e. port forward -> 192.168.0.0/24
instead of port fwd -> 192.168.0.5

if so what are the command chains for this?

this is what i use for standard IP# specific port fwd:
$IPT -t nat -A POSTROUTING -p tcp --dport 80 -o $IEXT -j DNAT --to 192.168.0.2
(this works OK)

Any ideas?

No it's not going to work.

First you need to understand why.

Your trying to do something called distributed Multicasting to a multicast group on your local network to get valid responses from all the web services on the localLan. "like why would this be of any benefit to anyone other then a DOS attack to your own network."

Unicast = 1 > 1
Broadcast = 1 > all "non routable"
Multicast = 1 > all in a Class D group. "only routable through multicast routers"

Also the response back from the web services would have to be UDP as not to bring down the network and this would cause even more headaches.

If your trying to do load balancing on web services then you would use a simple round robin DNS method, but with external ip addresses.

/raz

1 members found this post helpful.

Ahhh..
Now I understand..
it causes a greater security risk
and port forwarding is not possible and not recommended to broadcasts and multicasts

Thanks for your help..

"Now I Know" - The FunkFlex

0 members found this post helpful.