Cisco NAT setup

[eclipse2000]

I have a few things setup in NAT on my Cisco 1700 router to allow forwarding to our servers. One of our servers that runs VOIP requires a range of ports setting up. In the NAT settings at the botton where you can select the type and port, Is it possible to do a range of ports on one setting or does it have to be a seperate setting per port?

Thanks

Paul

[eclipse2000]

Any thoughts on this guys?

[cadet alain]

Hi,

which ios version have you got? Have you got a pool a public static IPs?

Regards.

Alain.

[eclipse2000]

Just a single static ip address on this connection.

Cheers

Paul

[Amit Aneja]

Paul,

This can be done through the following sample configuration:

Take a look.

======================================

interface Ethernet0/0

description LAN

ip address 1.1.1.1 255.255.255.0

ip nat inside

!

interface Serial2/0

description WAN

ip address 2.2.2.1 255.255.255.0

ip nat outside

!

!     NAT pool should contain the private ip address

!

ip nat pool TEST 1.1.1.2 1.1.1.2 prefix-length 30 type rotary

!

ip nat inside destination list 100 pool TEST

!

access-list 100 permit tcp any any range 5004 5082

access-list 100 permit tcp any any range 10000 20000

===============================================

As far as UDP ports are concerned you will need to create a static port

forwarding entry for each UDP port.

There is a bug is open for this enhancement; CSCsk86712

You can try the above stated configuration for TCP ports for UDP, but as its

not a supported configuration(for UDP) it may not work.

Regards,

Amit