Creating second physical LAN but no internet access is available

Question

Hi there , 
 
 relatively new to Sophos firewall however I currently have it setup at home feeding direct 100 mbit connection from the wall to my firewall with a switch that&rsquo;s fully occupied under 17.16.16.1/24 ip range for a few devices and my wireless AP. 
 im connected another box to my port 3 on my sophos firewall which I want to use as a proxmox appliance and assigned it 17.16.16.1 range however it doesn&rsquo;t get any internet at all? 
 what could I be doing wrong?

rfcat_vk · Accepted Answer

Are you using linked Nat rules? For a test please change the Source network to 172.16.17.0/24. Also please post a full copy of your firewall rule. Next what does logviewer show when you use the refined view based on the ip address? ian

emmosophos · Answer

Hello Daniel, 
 Thank you for contacting the Sophos Community. 
 To what port you are connecting your Switch, and which IP address in the Sophos Firewall this port has? 
 If, for example, Port1 is the one where your switch is connected, if you configure Port 3 with the same subnet, you&rsquo;ll have an overlap that will cause routing issues. 
 So either you can assign a different subnet to port 3 (e.g 172.16.17.1) or you can bridge the Port1 and Port3 interfaces to be in the same subnet. 
 I would suggest you go with a different subnet. 
 Regards,

Creating second physical LAN but no internet access is available

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