topic Active/Passive FW with Primary/Backup ISP in Next-Generation Firewall Discussions

Active/Passive FW with Primary/Backup ISP

jeromecarrier — Tue, 10 Oct 2023 06:47:46 GMT

My ISP will provide an Internet access with primary access and backup access. We have an HA Active/Stand-by firewall. The primary Internet access will be directly connected on active FW and the backup Internet access will be connected on interface on stand-by FW as showing in the following diagram.

My questions are :

- How I must configure Fw if primary access wil be done to continue to have access to Internet via Internet backup access ?

- If Internet primary access is down, how I can configure Fw to maintain VPN IPsec tunnel between Datacenter and SiteA via backup access

- If primary access is down, how I can configure Fw to maintain GlobalProtect VPN connection between users on Internet and datacenter via backup access ?

Regards

Re: Active/Passive FW with Primary/Backup ISP

ozheng — Tue, 10 Oct 2023 08:23:15 GMT

Hello Jeromecarrier,

The HA1 link is not a "back-to-back" link for user traffic.

In your setup, you can set each firewall to monitor the default gateway and 1/2 public IPs in the HA configuration.

So if the active cannot reach internet, it moves non functional and the secondary become active.

For the GP access, you can set the gateway list.

Olivier

Re: Active/Passive FW with Primary/Backup ISP

jeromecarrier — Tue, 10 Oct 2023 09:49:11 GMT

Hello

Thank you. I had few minutes ago an information from my ISP. The ISP plan to configure an VIP between both routers for active and backup internet access. So, I plan to connect eth1 of active FW to active ISP router and Eth1 of stand-by FW on backup ISP router. I changed my drawing like below. In this cas, the trafic will be automatically sent to Stand-by FW if active ISP router is down ?