Sim 07: NAT and PAT¶
Blueprint 3.3.b · Difficulty: Easy · Time target: 12 minutes
R1 is a branch edge router. Users on the 10.10.10.0/24 LAN need internet access through the single public address on R1's outside interface, a server must be reachable from the internet on a dedicated public address, and one internal web application needs a port forward.
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CML lab file · EVE-NG lab file
4 nodes. The lab boots in its starting configuration. CML: Import a lab, then start it. EVE-NG: import the .unl from the lab list; if your image folder names differ, edit each node's image.
Topology¶
graph LR
H1["HOST1<br/>10.10.10.10"]
S1["SRV1<br/>10.10.20.10"]
R1["R1 edge"]
ISP["ISP<br/>Lo1 192.0.2.1/24"]
H1 -- "Gi0/0 - 10.10.10.0/24 - Gi0/1 .1 inside" --- R1
S1 -- "Gi0/0 - 10.10.20.0/24 - Gi0/2 .1 inside" --- R1
R1 -- "Gi0/0 .2 outside - 203.0.113.0/30 - Gi0/0 .1" --- ISP| Node | CML image |
|---|---|
| R1, ISP | IOSv |
| HOST1, SRV1 | IOSv with no ip routing (or any Linux host) |
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