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Billion BIPAC-7402 / 7402W (Wireless) ADSL VPN Firewall Router with 3DES Accelerator
119
TCP
123
UDP
161
TCP
443
TCP & UDP
1503
TCP
1720
TCP
4000
TCP
7070
UDP
Because NAT can act as a "natural" Internet firewall, your router protects your network from
being accessed by outside users when using NAT, as all incoming connection attempts will
point to your router unless you specifically create Virtual Server entries to forward those ports to
a PC on your network. When your router needs to allow outside users to access internal servers,
e.g. a web server, FTP server, Email server or game server, the router can act as a "virtual
server". You can set up a local server with a specific port number for the service to use, e.g.
web/HTTP (port 80), FTP (port 21), Telnet (port 23), SMTP (port 25), or POP3 (port 110), When
an incoming access request to the router for a specified port is received, it will be forwarded to
the corresponding internal server.
For example, if you set the port number 80 (Web/HTTP) to be mapped to the IP Address
192.168.1.2, then all incoming HTTP requests from outside users will be forwarded to the local
server (PC) with the IP address of 192.168.1.2. If the port is not listed as a predefined
application, you need to add it manually.
Chapter 4: Configuration
NEWS (Network News Transfer Protocol)
NTP (Network Time Protocol)
SNMP
HTTPS
T.120
H.323
ICQ
RealAudio
104
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