BEC MX-210NP User Manual
NAT
The NAT (Network Address Translation) feature transforms a private IP into a public IP, allowing
multiple users to access the internet through a single IP account, sharing the single IP address. NAT
break the originally envisioned model of IP end-to-end connectivity across the Internet, so NAT can
cause problems where IPSec/ PPTP encryption is applied or some application layer protocols such
as SIP phones are located behind a NAT. And NAT makes it difficult for systems behind a NAT to
accept incoming communications.
NAT Status: Enabled. (Disabled if WAN connection is in BRIDGE mode)
ALG
VPN Passthrough: VPN pass-through is a feature of routers which allows VPN client on a private
network to establish outbound VPNs unhindered.
SIP ALG: Enable the SIP ALG when SIP phone needs ALG to pass through the NAT. Disable the SIP
ALG when SIP phone includes NAT-Traversal algorithm.
DMZ / Virtual Server
Interface: Select a WAN interface connection to allow external access to your internal network.
Service Index: Associated to EWAN interface marking each EWAN service (0-7), to select which
EWAN service the DMZ and Virtual server are applied to.
Click DMZ or Virtual Server to move on to set the DMZ or Virtual Server
parameters, which are represented in the following scenario.
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