Configuring Wide Area Network (Wan) Type; Mac Address - Sense SG-2440pfSense Quick Start Manual

Configuring Wide Area Network (WAN) Type

The WAN interface type is the next to be configured. The IP address assigned to this section becomes the
Public IP address that your network uses to communicate with the Internet.
Figure 7
Figure 7 depicts the 4 possible WAN interface types. Static, DHCP, PPPoE and PPTP. You must select one
from the drop-down list to proceed.
You will need further information from your ISP to proceed when selecting Static, PPPoE and PPTP such as
login name and password or as with static addresses, subnet mask and gateway address.
DHCP is the most common type of interface for home cable modems. One dynamic IP address is issued
from the ISP's DHCP server and will become the public IP address of your network. This address will change
periodically at the discretion of the ISP. Choose DHCP as shown in Figure 8 and proceed to the next section,
MAC Address, MTU and MSS:
Figure 8

MAC address

Figure 9
If replacing an existing firewall, you may want to enter the old firewall's WAN MAC address here, if you can
easily determine it. This avoids common issues involved in switching out firewalls, such as ARP caches, ISPs
locking to single MAC addresses, etc.
If you are not able to enter the MAC address of your current firewall here, the impact is most likely,
insignificant. Power cycle your router and modem and your new MAC address will usually be able to get
online. For some ISPs, you have to call when switching devices, or go through an activation process.
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