User guide

Ubee Interactive Using the Advanced Gateway Setup Options
Ubee DVW3201B Advanced Wireless Voice Gateway Subscriber User Guide • May 2012 43
DNS Relay Allows the cable modem to act as the “relay” device. Each PC
that wants to access a URL does not have to send a DNS
request to a DNS server on the Internet. DNS is used to
resolve a URL (Web site name) to an IP address. DNS Relay
is typically used for commercial applications where each
device/PC connected to the cable modem uses the DNS Relay
address rather than going to a public DNS server hosted by an
ISP to look-up a URL.
NAT ALG Status – Filters to allow (enable) or disallow (disable) protocols to pass through the
DVW3201B to connected devices (computers, game consoles, and so on).
RSVP Enables or disables resource reservation protocol (RSVP).
RSVP defines how applications reserve resources and how
they free the reserved resources once they are no longer
needed.
FTP Enables or disables the file transfer protocol (FTP) used to
transfer files from one host to another.
TFTP Enables or disables the trivial file transfer protocol (TFTP) – a
simpler protocol generally used for automated file transfers.
Kerb88 Enables or disables the Kerberos network authentication
protocol which allow nodes to communicate over a non-secure
network using “tickets” on port 88 to prove their identity to one
another.
NetBios Enables or disables the network basic input/output system
(NetBIOS) services related to the OSI session layer. NetBIOS
allows applications on separate computers to communicate
over a LAN.
IKE Enables or disables the network key exchange (IKE) protocol
used to set up a security association (SA) in the IPsec protocol
suite.
RTSP Enables or disables the real time streaming protocol (RTSP)
network control protocol used to establish and control media
sessions between end points.
Kerb1293 Enables or disables the Kerberos network authentication
protocol which allow nodes to communicate over a non-secure
network using “tickets” on port 1293.
H225 Enables or disables the H.225 protocol used to define
messages and procedures for call signalling, media
packetization, and registration, admission, and status (RAS)
functions.
PPTP Enables or disables the point-to-point tunneling protocol
(PPTP) used to implement a virtual private network.
MSN Enables or disables the Microsoft network protocol used for
instant messaging.
Label Description