User's Manual

C HAPTER 7 | Services
NAT/NAPT Settings
– 71 –
◆ Remote IP Address — Specifies the source IP address on the WAN to
allow access from. Leaving this parameter blank allows access from all
traffic.
◆ Enable — Checking this box activates the parameters configurated
once added to the Current NAT Port Forwarding Table.
(Default: Enabled)
NAT ALG AND PASS-
THROUGH
Application Layer Gateway (ALG) and passthrough is a useful feature when
a host computer or server on the Local Area Network must be accessible
from the Internet using specific protocols. This can be necessary with
certain software applications that do not function reliably through Network
Address Translation.
Figure 34: NAT ALG and Pass-Through
The following items are displayed on this page:
◆ IPSec Pass Through — Enables IPsec passthrough.
(Default: Enabled)
◆ L2TP Pass Through — Enables L2TP passthrough. (default: Enabled)
◆ PPTP Pass Through — Enables PPTP passthrough. (Default: Enabled)
◆ FTP — Enables FTP passthrough. (Default: Enabled)
◆ H.323 — Enables H.323 (Windows Netmeeting) passthrough.
(Default: Enabled)
◆ SIP — Enables SIP passthrough. (Default: Enabled)
◆ RTSP — Enables RTSP passthrough. (Default: Enabled)
◆ ICQ — Enables ICQ passthrough. (Default: Enabled)