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Motorola SURFBOARD SBG1000 Livre blanc
Wireless Cable Modem Gateway Family
Features
A Web-based graphical user interface simplifies
configuration so the authorized administrator can create
customized levels of security. The full-featured firewall
capabilities of the Motorola SBG1000 come pre-configured
so users do not have to be security experts to effectively
protect their LAN. However, for those LAN connections
that require increased security or flexibility, the Motorola
SBG1000 can be easily customized to secure LAN
resources to desired levels. It contains the following
robust firewall features:
The Motorola SBG1000 Wireless Cable Modem Gateway
is an ethernet router and it also supports Network Address
Translation (NAT) so private Internet Protocol (IP)
addresses within the LAN can be automatically mapped
to the public IP address on the Gateway.
The cable operator issues an IP address to the SBG1000,
which includes an integrated Dynamic Host Control
Protocol (DHCP) server that issues dynamic IP addresses to
computers on the LAN. Smaller LANs can add PCs simply,
or in larger LANs network administrators can create a NAT
table that does the global-to-local and local-to-global IP
address mapping. The use of NAT allows increased
security since different levels of security can be defined for
each IP address on the LAN. Private IP addresses within
the LAN are hidden from the public Internet because
external users only see the IP address of the SBG1000.
The Motorola SBG1000 Wireless Cable Modem Gateway's
implementation of NAT supports multi-session IPSec
VPN passthrough as well as H.323 video conferencing
standards. Authorized users can take advantage of the
built-in IPSec support to establish secure VPN tunnels to
enterprise resources. Multiple tunnels can be established
at a single time and multiple users can each establish a
tunnel. For example, a husband and wife on separate PCs
can tunnel into their respective employers' VPNs at the
same time using the SBG1000.
As broadband connections deliver increased bandwidth
to the home, video conferencing is becoming more widely
deployed. Intelligence within the Motorola SBG1000
Wireless Cable Modem Gateway will identify video
conferencing sessions using the H.323 standard and allow
them to be established through the firewall so authorized
users can establish secure video conferencing over the
Internet. Firewall features within the SBG1000 will create
an opening to allow the H.323 sessions to be securely
established so video conferencing tunnels can be
easily established.