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DHCP and NAT Version 1

Posted: Thu Jan 24, 2019 8:25 pm
by kansukre
ImageLab Scenario:

In this lab, you will be configuring routers and a DHCP server to enable DHCP IP address assignment and Network Address Translation (NAT) using EVE-NG. The network diagram of Figure 1 illustrates a LAN network connected to a WAN. In this network, a WAN DHCP server provides the dynamic IP address assignment to the LAN hosts (Hosts 1,2 and 3). To enable DHCP IP address assignment in this network, Router R1 must be configured as a DHCP relay agent. As discussed in lecture, a DHCP relay agent forwards DHCP packets between clients and servers when they are not on the same physical subnet. Relay agent forwarding is distinct from the normal forwarding of an IP router, where IP datagrams are switched between networks somewhat transparently. By contrast, relay agents receive DHCP messages and then generate a new DHCP message to send out on another interface. The relay agent sets the gateway address (giaddr field of the DHCP packet) and, if configured, adds the relay agent information option.

In addition, this lab will demonstrate how NAT translates IP addresses. As discussed in lecture, NAT translates non-routable private, internal addresses into routable, public addresses. NAT has an added benefit of providing a degree of privacy and security to a network because it hides internal IP addresses from outside networks. In this Lab, you will configure dynamic and static NAT. To demonstrate this capability, Router R1 will be configured to perform NAT translation.

Re: DHCP and NAT Version 1

Posted: Thu Jan 24, 2019 8:57 pm
by Uldis (UD)
Please add screenshot of your lab