Understanding network address translation and port address translation is essential, as both are widely used. When setting up an IPsec VPN, the network administrator needs more advanced configuration when using NAT and PAT.
- [Instructor] Any visible company on the internet…requires a public IP address.…Internally, organizations use private IP addressing.…As a result,…many organizations use Network Address Translation.…Network Address Translation operates on a router…and converts private IP addresses to a public IP address…and vice versa.…The receiving host will only see the public IP address,…providing an additional layer of security…by concealing the entire internal network…behind that address.…
The network administrator configures NAT…to allow internal users to access the internet.…Prior to exiting the internet,…the traffic must pass through the router…and be converted to a public IP address.…When configuring traditional NAT,…Ethernet interfaces on a router are NAT inside…and serial interfaces are NAT outside.…And the administrator must configure a set of rules…for translating the IP addresses in the packet headers.…
Here you can see a NAT router configuration…and here we say which one is inside.…This define what the IP addresses would be for the inside…
- Using Packet Tracer
- Reviewing VPN topologies and components
- Encapsulating security payload protocol
- VPN configuration
- Hairpin and split tunnel VPN
- Clientless SSL VPN and AnyConnect SSL VPN
- Endpoint posture assessment
- Preparing sites for an IPsec VPN
Skill Level Intermediate
Troubleshooting Your Network with Wiresharkwith Lisa Bock2h 35m Intermediate
Cisco ICND2 Cert Prep: Switchingwith Russell Long2h 20m Intermediate
1. VPN Concepts
3. VPN Configuration
4. Remote Access VPN
5. Site-to-Site VPN
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