Siemens OZS164 SERIES WEB SERVER Commissioning Instructions page 74

Port Forwarding (PAT)
Notes
74 / 108
Siemens
Building Technologies
• Port Forwarding is used to determine which local IP addresses/ports the router
translates to which public IP addresses/ports.
• Web operating pages are preset on the web server via Port 80 (HTTP, TCP/IP).
As a result, queries from the Internet must be translated using the public IP
address/port to the private IP address/port 80 for the web server.
• The port IP address is appended to the web browser address line: <IP
address>:<Port>, e.g.
• The web browser always uses port 80 unless another port is entered. As a
result, the information in the address line for the web browser is always: <IP
address>:80 and <IP address>, or
• Ports not equal to 80 are considered more robust against hackers.
• We recommend using Forwarding Ports from the private range for the port (see
Section 6.3.1).
In the example, queries from the Internet to a public IP address (Internet
connection)/Port 80 are forwarded to local IP address
server)/port 80.
Web server
Communication
122.104.2.10:80.
122.104.2.10:80 and 122.104.2.10.
192.168.2.10 (web
CE1C5711en
25.08.2010