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DMZ IP Address
: Specify the IP address of the DMZ host.
Non-UDP/TCP/ICMP LAN Sessions
: Place a check in this box to enable this
feature. When a LAN application that uses a protocol other than UDP, TCP, or ICMP
initiates a session to the Internet, the router's NAT can track such a session, even
though it does not recognize the protocol. This feature is useful because it enables
certain applications (most importantly a single VPN connection to a remote host)
without the need for an ALG.
Note
: This feature does not apply to the DMZ host (if one is enabled). The DMZ host
always handles these kinds of sessions.
Application Layer Gateway (ALG)
Configuration: Place a check in appropriate feature
boxes to enable them. . Some protocols and applications require special handling of the IP
payload to make them work with network address translation (NAT). Each ALG provides
special handling for a specific protocol or application. A number of ALGs for common
applications are enabled by default.
PPTP
: Allows multiple machines on the LAN to connect to their corporate networks
using PPTP protocol. When the PPTP ALG is enabled, LAN computers can establish
PPTP VPN connections either with the same or with different VPN servers. When the
PPTP ALG is disabled, the router allows VPN operation in a restricted way -- LAN
computers are typically able to establish VPN tunnels to different VPN Internet