Static NAT | Day 44 Lab - CCNA study notes Issue 35

Practice configuring static source NAT on a router using Packet Tracer (Free CCNA | Static NAT | Day 44 Lab – Notes)

(Lab prepared by Jeremy McDowell)

Lab instructions:

1. Attempt to ping from PC1 to 8.8.8.8.  Does the ping work?

No. The ISP will drop the traffic because the PCs have private IP addresses.

2. Configure static NAT on R1.

   > Configure the appropriate inside/outside interfaces

   > Map the IP addresses of PC1, PC2, and PC3 to 100.0.0.x/24

First, let’s configure the inside and outside interfaces - shall we?

Next, we configure the static nat mappings. We will map each PC’s private IP to a public IP in the 100.0.0.x/24 subnet.

R(config)#ip nat inside source static inside-local-ip inside-global-ip

Let’s start on PC1, then PC2, then PC3. Then we check the nat translations and statistics.

We will try some pings (step 3) and check the translations again.

3. Ping 8.8.8.8 from PC1 again.  Does the ping work?

The ping works this time.

4. Ping google.com from each PC, and then check the NAT translations on R1.

Pings to google.com from each PC are successful.

Note, 8.8.8.8 was configured as the DNS server of each PC. So the PCs will contact 8.8.8.8 to learn the IP address of google.com and the PCs should be able to ping google.com.

Let’s check the translations on R1 again.

5. Clear the NAT translations on R1.  Which entries remain?

All the dynamic entries are gone. Only the static entries remain.

Source:

Free CCNA | Static NAT | Day 44 Lab | CCNA 200-301 Complete Course

https://www.youtube.com/watch?v=vir6n_NVZFw&list=PLxbwE86jKRgMpuZuLBivzlM8s2Dk5lXBQ&index=86