HP EX490 MediaSmart Server - Manual (Page 79)

Start Using Your Server
Broadband Router Firewall
The HP MediaSmart Server requires a broadband router. Broadband routers allow multiple
computers and devices to share an Internet connection using
NAT (Network Address Translation)
technology. NAT allows all the computers and devices on your network to use a single Internet
connection (
IP address ). NAT acts as a firewall by masking the real IP addresses of your network
components—including the HP MediaSmart Server—which keeps them from being seen outside
the network.
Some broadband routers implement Stateful Packet Inspection (SPI), which adds enhanced
security by examining each packet of information before allowing it into the network. SPI can
prevent advanced forms of incursions like Denial of Service attacks.
Windows Home Server Firewall
Windows Home Server includes Windows Firewall, which protects communications between the
server and the computers on your network. This firewall is configured to allow remote access. It is
not configurable by the user.
Personal Firewall
A personal firewall is a software application that protects an individual computer. Because a
personal firewall is behind the broadband firewall, it protects the computer on which it is installed
from attacks from other computers within the network.
Firewall Ports
The following table lists the ports used by the server.
Ports used by the server
Type Port numbers Description
TCP 80, 443 Standard Web site
TCP 55000, 56000 internal (subnet only) Web site
for Windows Home Server Web
services
TCP 1138 Transport
TCP 8912 Backup and beacon
UDP 8912 Backup and beacon
TCP 2869 UPnP (Universal Plug and Play)
UDP 1900 UPnP
TCP 3389 Remote desktop
TCP 4125 Remote access (when enabled)
TCP 139, 445 File and print sharing
UDP 137, 138 File and print sharing
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