Cambium PTP 450 series, Руководство пользователя

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Data network planning PTP 450 User Guide
ptp-450 (July 2014)
2-79
Figure 24 Cambium network management domain
Network Address Translation (NAT)
NAT, DHCP Server, DHCP Client, and DMZ in BHS
The system provides NAT (network address translation) for BHSs in the following combinations of NAT and
DHCP (Dynamic Host Configuration Protocol):

NAT Disabled

NAT with DHCP Client ( DHCP selected as the Connection Type of the WAN interface) and DHCP Server

NAT with DHCP Client( DHCP selected as the Connection Type of the WAN interface)

NAT with DHCP Server

NAT without DHCP
NAT
NAT isolates devices connected to the Ethernet/wired side of an BHS from being seen directly from the wireless
side of the BHS. With NAT enabled, the BHS has an IP address for transport traffic (separate from its address for
management), terminates transport traffic, and allows you to assign a range of IP addresses to devices that are
connected to the Ethernet/wired side of the BHS.
In the Cambium system, NAT supports many protocols, including HTTP, ICMP (Internet Control Message
Protocols), and FTP (File Transfer Protocol). For virtual private network (VPN) implementation, L2TP over IPSec
(Level 2 Tunneling Protocol over IP Security) and PPTP (Point to Point Tunneling Protocol) are supported.
When NAT is enabled, a reduction in throughput is introduced at the BHS (due to processing overhead).