[SOLVED]OPNsense installed but no ipv4 internet for home network

[abij]

EDIT: I got it working. During setting interface I unchecked 'track ipv6' then it worked.

Hello,

I am new to OPNsense and please bear with me for my stupid questions.

I recently turned an old thinkpad x40 to an OPNsense appliance with the
following hardware set up

- thinkpad x40 (provides cpu + ram)
- thinkpad docking base (provides hard drive + one LAN port)
- SMC cardbus ethernet plugged into thinkpad (provides one WAN port)

I have installed the latest OPNsense on this appliance and updated it. However I
don't know how to and where should I insert it to my current network. What I
want is just use it as a firewall for my home network.

My current network topology is like this

Internet --> ATT NGV599 modem (IP passthrough) --> (WAN port connected) Netgear
AR6250 wifi router --> one LAN port connected server + several WIFI devices

My intention is to insert the OPNsense appliance between the modem and router so
the traffic can be firewalled, i.e., the new topology would become

Internet --> ATT NGV599 modem --> [intended] cable goes to WAN interface of
OPNsense thinkpad then let thinkpad LAN port connect to --> (LAN port connected)
Netgear AR6250 router --> one LAN port connected server + several WIFI devices

But the problem now is there is no internet access coming out of LAN of
OPNsense. What I did was

- I plugged cable from modem into the thinkpad WAN port
- Then the OPNsense thinkpad LAN port went to my computer directly for testing
  the internet access
- The computer (on windows 10) immediately after OPNsense thinkpad appliance
  could not visit the Internet. It says it has IPv6 Internet however no access
  to any website (I tested google.com).

Any suggestions? Thanks in advance.

[kanstin]

You may need to add firewall rules to allow LAN access to the internet.