AirLive IGR-2500 - Manual (Page 44)

3.11.3 Virtual Server
AirLive IGR-2500 ALG Options to allow IPSec, PPTP and VoIP pass-through, user can also define the port
number for ALG Options.
You may have FTP, MAIL, VPN or other server on your LAN. If you would like to allow the global users access
some servers providing special services on your LAN. This function can help you to do this.
Provide with global port & local port mapping function, let you easily configure internal server with same port
number mapping to WAN IP different port number.
ALG Options:
„ VPN Pass Through: For IPSec and PPTP
„ VoIP Pass Through: VoIP Gateway can be connected directly to IGR-2500 LAN port, and open the
corresponded VoIP port number.
(Figure 3-39)
Figure 3-39 ALG Options and Pass Through
Virtual Server: (Figure 3-40)
„ Global port: WAN virtual protocol number
„ Local port: used by internal server port number
„ Local IP: local server IP address
„ Specify A Global IP: You can select to define one IP address from IGR-2500 several WAN ports setting.
If you specify Global IP address with 0.0.0.0, the Internet user will be able to access virtual server from
all the WAN port IP addresses.
„ Select Port: If you don’t know the port number, you can use this feature to select the service you want to
define.
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