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Title: Japanese internal subnet
Post by: DaNNetworks on April 09, 2025, 11:07:36 AM

Hello everyone,

I have a customer with an internal subnet 110.0.55. which causes a lot of issues.
traffic is also routed outside which is not desirable.

We have started a migration project to phase out this subnet but until then I need a workaround, does anyone have a good tip to temporarily keep this traffic internal?

Thanks in advance!

Title: Re: Japanese internal subnet
Post by: meyergru on April 09, 2025, 11:19:46 AM

You can create an outbound firewall rule to block traffic from that subnet on the WAN interface. If you need outbound traffic from there, you need an outbound NAT rule.

Title: Re: Japanese internal subnet
Post by: DaNNetworks on April 09, 2025, 04:26:09 PM

Thanks, going ahead and try that!

OPNsense Forum

English Forums => 25.1, 25.4 Production Series => Topic started by: DaNNetworks on April 09, 2025, 11:07:36 AM