User's Manual

Rajant Corporation XL, XLE, XLV BreadCrumb
®
User Guide
- 28 -
To forward traffic through a BreadCrumb device in Gateway Mode or Gateway (Ingress) mode, you
must know:
• The IPv4 port(s) used by the forwarded traffic (e.g., 25 for SMTP, 80 for HTTP, etc.).
• The TCP protocol(s) used by the forwarded traffic (TCP and/or UDP).
• The IPv4 address to which the forwarded traffic is to be forwarded.
• The IPv4 port(s) at the destination address to which the forwarded traffic is to be forwarded (usually the
same as the ports described above).
The checkbox marked ‘Enable’ specifies whether a particular forward configuration is active. This allows an
administrator to pre-configure port forwards and selectively enable or disable them in the future.
When a port forward has been configured, click the ‘Add’ button to the right in order to add it to the current
configuration.
You may add as many port forwards as necessary to a BreadCrumb.
Example: Port Forwarding Configuration for a Web Server
Suppose a web server exists somewhere within a BCWN, and one of the BCWN BreadCrumb devices is serving
as a Gateway connected to the Internet. In order to allow users on the Internet to access the web server, the
following port forward configuration is required:
3.6.1 EXT. PORTS
We will allow Internet users to access the internal web server using port 80, the default for web traffic.
The external port range is therefore 80-80.
3.6.2 PROTOCOL
Web traffic uses TCP, not UDP, so only the TCP checkbox should be checked.
3.6.3 IP ADDRESS
This is the IP address of the web server on the BCWN. Note that this should be a fixed IP address, as addresses
obtained via DHCP can change overtime and thereby cause the port forwarding to fail.
3.6.4 TO PORTS
The web server on the BCWN is listening for connections on port 80, so the port range should be 80-80.
Once this port forward is enabled and saved to the BreadCrumb, Internet users may direct their web
browsers to the Gateway BreadCrumb device’s external IP address in order to reach the web server on
the BCWN.
3.7 SECURITY
Several levels of security are available for the BreadCrumb Wireless Network, which may be used individually or
in combination with one another. We are constantly adding security features, so please contact your Rajant
Account Representative if you have specific needs not included in this section.