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D-Link DSL-226 User Manual
Section 4 - Configuration
Enable IPSec
ALG:
Allows VPN clients to connect to their corporate network using
IPSec. Some VPN clients support traversal of IPSec through NAT. This
Application Level Gateway (ALG) may interfere with the operation
of such VPN clients. If you are having trouble connecting with your
corporate network, try turning this ALG off. Please check with the
system administrator of your corporate network whether your VPN
client supports NAT traversal.
Enable H.323
ALG:
H.323 standard provides VoIP telephony and video conferencing.
Enable ALG for H.323 if such applications will be used in your network.
Enable RTSP
ALG:
Allows applications that use Real Time Streaming Protocol (RTSP) to
receive streaming media from the Internet.
Enable SIP ALG:
Allows devices and applications using VoIP (Voice over IP) to
communicate across NAT. Some VoIP applications and devices have
the ability to discover NAT devices and work around them. This ALG
may interfere with the operation of such devices. If you are having
trouble making VoIP calls, try turning this ALG off. This is disabled
by default.
Enable FTP ALG:
Allows devices running FTP (File Transfer Protocol) to provide such
service successfully through the NAT router.
Enable PPTP
ALG:
Allows machines on the LAN to connect to their corporate network
using the PPTP protocol.
Click
Save
when you are done.
