62
4.4.2.3 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.
In this session, there are
“VPN Passthrough”, “DMZ/Virtual Server” provided to solve these nasty problems.
NAT Status:
Enabled. It depends on ISP Connection Type in Internet settings.
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.
Interface:
Select to set DMZ/Virtual Server for
“ADSL(PVC0-PVC7)”.
Click
DMZ
or
Virtual Server
to move on to set the DMZ or Virtual Server parameters,
which are represented in the following scenario.
Summary of Contents for 7204A-NRD
Page 1: ...Wireless N ADSL2 Firewall Router User Manual Last Revised Date March 20 2015...
Page 10: ...6 1 4 Applications for the Router Diagram on how to connect your router...
Page 36: ...32 4 2 5 ADSL Status The ADSL Status section displays the ADSL synchronization status...
Page 39: ...35...
Page 42: ...38 4 4 1 1 Internet...
Page 55: ...51 PIN Method Configure AP as Enrollee 1 Jot down the WPS PIN eg 03454435 Press Start WPS...
Page 80: ...76 4 4 3 Access Management...
Page 97: ...93...
Page 99: ...95...