2 LAN and 1 WAN

[scottnguyen]

We have 1 Internet connection (T1) and two companies.  I wish to separate each company into its separate LAN.  One firm already has Active Directory and DHCP on their network, and the other does not not - just workgroup.  On the firm with only workgroup, I wish to use pfSense's DHCP to assign their IP addresses and leave the other firm's DHCP in place.  How can I ensure than I separate the two LANS and ensure one firm uses pfSense's DHCP and the other LAN use it's own DHCP range.

Example:

LAN 1:  Active Directory / own DHCP / 192.168.4.0/24
LAN 2:  Workgroup based / use pfSense DHCP / 192.168.5.0/24
WAN:  Shared

Thank you.

[blak111]

Just enable DHCP on the LAN2 interface and then create firewall rules on each interface that blocks traffic destined to the other segment.