Comments on: How to configure NAT in Cisco IOS (NAT Overloading) – Part 1

By: juan

juan — Sun, 06 Nov 2011 19:05:58 +0000

I had a Cisco 3825 acting as a Gateway

I had Static IP : Example:

78.12.34.34 on 0/0 using SFP gigabit port 10gb per port

the 0/1 is set up as defult 38.100.1.145 conecting to
swtich cisco

then I had 8 server conected in to that Cisco switch

1st-port: Server has Local ip as 38.100.1.146
2st-port: Server has Local ip as 38.100.1.147
3st-port: Server has Local ip as 38.100.1.148

How I can open port as 554,80,22… on this Cisco 3825

let say on server 1= ip-38.100.1.146:554 how I open this port.

Thanks

By: khalil

khalil — Fri, 09 Sep 2011 22:14:30 +0000

quick question….
would it be possible to convert all of the private address to public by using the serial public ip address

for example ip nat inside source list 10 interface s 0/0/0 overload

since the s 0/0/0 interface already has the public address which is 100.100.100.10?

what if the addresses in the pool has changed?

By: Ash

Ash — Fri, 22 Jul 2011 15:00:34 +0000

Dear All,
I have 8 public ip and whant to nat to my 4 local servers
i have cisco 1841 router please can any one help in dng a static nat

By: Rahul

Rahul — Tue, 10 May 2011 11:39:46 +0000

Dear tdma,
To know which internal IP gets natted to which public IP, you can use this command:

Router# show ip nat translations

It will show that which private IP got mapped/natted to which public IP.

By: Rahul

Rahul — Tue, 10 May 2011 11:36:07 +0000

Dear tdma,
If you are having multiple public IPs, then you have to specify them in NAT POOL. That public IPs from pool will automatically get assigned to private IPs.

By: arman

arman — Mon, 11 Oct 2010 17:35:52 +0000

very good explanation. thanks a lot

By: Animesh Singh

Animesh Singh — Fri, 06 Aug 2010 14:17:53 +0000

please tell me ,static routing,default routing,dynamic routing(Routing protocols),vpn,nat &also there apropriate example

By: tdma

tdma — Mon, 12 Jul 2010 20:54:35 +0000

I have a question. If you have more than 1 IP in the public outside IP pool, how do you know/assign which internal IP gets natted to which public IP?

By: cdbiste

cdbiste — Mon, 15 Mar 2010 00:33:04 +0000

thanks,it’s excellent,how to configure the autoconfiguration IPv6?

By: Bary

Bary — Sat, 06 Mar 2010 17:24:26 +0000

Nice how-to, well written and easy to follow

Worked first time

Thanks