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61[For assistance, please call: 1-800-272-7033]
Operating Instructions
Functions
Address Translation
Port Forwarding
When data is sent from a PC on the WAN (Internet) side to the LAN (Home) server using an
application, a packet is sent out to this product. The packet contains a port number used by the
application, and is forwarded to a specified PC. In order to use this port forwarding function, verify
which port number the application uses, enter it into the forwarding port no. entry field, and the enter
the applicable PC's IP address into the forwarding IP address entry field.
Regarding principal applications and port numbers
Web server: TCP No. 80, FTP server: TCP No. 20 and No. 21
Telnet: TCP No. 23, SMTP server: TCP No. 25, POP3 server: TCP No. 110
Notes
• When installing a separate server on the LAN (Home) side, it is necessary to give it a different port
number from the port number for the camera portal of this product (factory default: 80). Modify the
port number for the camera portal of this product in Options. (see page 77)
• Up to 16 settings can be registered.
Example:
When making a website accessible by starting up a web server on a PC with a private address of
192.168.0.2, enter the TCP protocol, port number:80 (HTTP service port number), and 192.168.0.2
(private address).
When starting up a mail server on a PC with a private address of 192.168.0.3, enter the TCP protocol,
port number:25 (HTTP service port number), and 192.168.0.3 (private address).
Example:
Notes
• Set up a TCP/IP referring to Stabilizing the PC's IP Address. (see page 135)
• The device registered as the forwarding IP address in port forwarding can be accessed from the
Internet through the registered protocol and port.
192.168.0.3:25
192.168.0.2:80
.101: 25
.101: 80
.101:
Port number translates to a specified address
Sends E-mail
Port number
Refers to Website
Internet
Web browser
Address of this product
192.168.0.2
Web server
(TCP Port:80)
192.168.0.3
E-mail server
(TCP Port:25)
Mailer