Local Networking Considerations; Dhcp Versus Static Ip Addressing; Mac Filtering; Firewall Settings - enphase ENV-S-WM230 Installation And Operation Manual

Local Networking Considerations

DHCP versus Static IP Addressing

If the site owner prefers not to use DHCP, you can set up the Envoy to use a static IP address. Use the
Installer Toolkit to configure the static IP. Refer to
on the Enphase Installer Toolkit.
 Tap the Network Connectivity menu item. This allows you to see if the Envoy is using DHCP or
Static-IP, and it allows you to change this setting if needed.
Tap Check Network Connectivity to view the Envoy connections.

WARNING: Do not change the Envoy DHCP setting to use a static IP address unless you
also reserve the same IP address on the broadband router. See the section on DHCP
reservations in the router instructions. Failure to reserve the static IP address on the
router may result in duplicate IP addresses and intermittent Internet connection
problems with the Envoy-S.

MAC Filtering

Check to see if MAC filtering is in use at the site. This has nothing to do with Apple Macintosh
computers, but rather, refers to the MAC (Media Access Control) address that each individual network
card possesses. The MAC Address is a 48-bit address, which uniquely identifies that piece of hardware.
MAC filtering is a security mechanism by which routers allow administrators to specify which devices
can use the router for access to the Internet. This prevents unauthorised/unknown personnel from using
the router to get to the Internet.
An example of a MAC address would be:

MAC addresses contain six pairs of characters, including any number 0-9 and letters A-F.

 The MAC address of the Envoy will begin with:
If MAC filtering is in use at the site, identify the specific MAC address of the Envoy and add it to list of
authorised devices on the router. The MAC addresses (wired and wireless) are located on a label on the
back of the Envoy.

Firewall Settings

The Envoy initiates outbound connections to Internet servers. Such connections may be restricted by
firewall rules set up on the site's broadband router. Broadband routers typically allow all outbound
connections but restrict any/all inbound connections. If outbound firewall rules are applied at the site,
you must configure a static IP address for the Envoy and add new rules that allow outbound access as
follows:
Direction
Source
OUT <Envoy IP address>
OUT <Envoy IP address>
OUT <Envoy IP address>
The Envoy connects to these servers using their DNS names. If you add firewall rules for Envoy reporting,
Enphase recommends using the DNS names rather than the underlying IP addresses. This is because the
IP addresses are subject to change without notice.
38
Envoy-S Metered Multiphase Installation and Operation
enphase.com/installer-toolkit/
00:17:F2:D6:B1:45
00:D0:69:
Protocol Port
TCP 80, 443
UDP 80
TCP 80, 443
© 2016 Enphase Energy Inc.
for more information
Destination
reports.enphaseenergy.com
ping-udp.enphaseenergy.com
home.enphaseenergy.com
141-00035 Rev 01