asked on

Cisco Natting

Dear EE

I had two 5 public ip let say X.X.X.5 ------ x.x.x.9
and I had full class C network with 400 subscribe

now I make all 400 subscribe NAT to one Public IP and leave the other 4 free !!??
because I don't know how to make NAT all 400 with 5 public

I think its like that but I not test it because I not buy Cisco router till now

int f0/0
ip add X.X.X.6 255.255.255.248
ip nat outside

int f0/1
ip add 192.168.0.1 /24
ip nat inside

access list 1 permit 192.168.0.0 .0.0.0.255
ip nat pool myconfig x.x.x.6 x.x.x.9 netmask 255.255.255.248
ip nat inside source list 1 pool myconfig overload

Is this work ?? or just NAT whole class C with X.X.X.6 and when there is no port free it use the second ip x.x.x.7
if yes can I put port range for NAT like just transulate 10 port per public IP ?

Regards

rsivanandan

Yes the above would work.

Cheers,
Rajesh

majedalanni

ASKER

Dear

Can I put port range for NAT like just 10 port per public IP and when full use the other public from pool ?

rsivanandan

hmm for outgoing you don't need to do that.

Cheers,
Rajesh

majedalanni

ASKER

Dear

I had problem with all my subscribe that out with one public and some of them cannot use yahoo vioce chat and about that I need my private network NAT with pool public

rsivanandan

Sorry I didn't get that, can you type in more detail what the problem is ?

Cheers,
Rajesh

majedalanni

ASKER

Dear

I had 500 clients that natted with one public IP
For that not all my clients can get yahoo voice chat at same time not the 500 but maybe 150

So for that I need to they natted with more than one public ip let say 10 public ip?

Regards
Majed

rsivanandan

You already have 4 public ip address there and I would believe that should solve the problem.

Cheers,
Rajesh

majedalanni

ASKER

Yes I had 4 public
but when I check just use one IP !!! not 4

rsivanandan

how are you checking ?

show xlate and show conn would show you the ip details.

Cheers,
Rajesh

majedalanni

ASKER

Dear

I use pocket sniffer (ethreal) and see just on ip !!!

regards

rsivanandan

From couple of machines from the internal network, launch http://whatismyip.com/ in a browser.

Look at it and let me know if you just see only one ip address.

Cheers,
Rajesh

majedalanni

ASKER

Dear
it show same pubil IP

ASKER CERTIFIED SOLUTION

rsivanandan

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majedalanni

ASKER

Dear

I think when the first public ip use all avialable port then use the second public ip.

Regards