Planet Networking & Communication MH-5001 User Manual page 43

MH-5001 User Manual
3. DNS Proxy: After activating the DNS proxy mode, the client can set its DNS server to the MH-5001 (that is, send the DNS
requests to the MH-5001). The MH-5001 will then make the enquiry to the DNS server and return the result to the client.
Besides, the caching mechanism performed by the DNS proxy can also help reduce possible duplicate DNS lookups. As
the following Figure 4-2 described. WALL-1 redirects the DNS request from PC1_1 to the real DNS server (140.113.1.1).
4. DHCP Relay: Activate the DHCP relay mode of MH-5001 so that the MH-5001 will become the relay agent and relay the
DHCP broadcast to the configured DHCP server. As the following Figure 4-3 described, MH-5001 redirects the DHCP
request from the preconfigured port (LAN1) to the real DHCP server (10.1.1.4). Besides, in this diagram, we can find that
the PC of DMZ region communicated with the DHCP server directly.
Figure 4-1 DDNS mechanism chart
Figure 4-2 DNS Proxy mechanism chart
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Chapter 4
System Tools