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Tutorials and FAQs / WAN Interface Blocking All Inbound Traffic/Connections
« on: August 08, 2018, 06:24:05 am »
All,
I recently setup an OPNsense version 18.7 firewall VM using an iso file in VMWare Workstation Pro 14. My firewall just has the WAN and LAN interfaces.
On the WAN network, I have a Windows XP VM connected. On the LAN network, I have a Windows XP VM and an Ubuntu desktop VM. I'm using a full class C IP address range for both networks.
To do some basic testing, I disabled Outbound NAT on the WAN interface. I also created an ANY ANY ANY rule for the WAN interface, i.e., ANY source IP to ANY destination IP for ANY protocols ALLOW.
From my VMs on the LAN, I can ping and traceroute to the Windows XP VM on the WAN network successfully.
However, even with the ANY/ANY/ANY ALLOW rule on the WAN interface, from the VM on the WAN network, I cannot ping or traceroute to the two VMs on the LAN network.
Any help or ideas would be appreciated.
Thanks.
Ron
I recently setup an OPNsense version 18.7 firewall VM using an iso file in VMWare Workstation Pro 14. My firewall just has the WAN and LAN interfaces.
On the WAN network, I have a Windows XP VM connected. On the LAN network, I have a Windows XP VM and an Ubuntu desktop VM. I'm using a full class C IP address range for both networks.
To do some basic testing, I disabled Outbound NAT on the WAN interface. I also created an ANY ANY ANY rule for the WAN interface, i.e., ANY source IP to ANY destination IP for ANY protocols ALLOW.
From my VMs on the LAN, I can ping and traceroute to the Windows XP VM on the WAN network successfully.
However, even with the ANY/ANY/ANY ALLOW rule on the WAN interface, from the VM on the WAN network, I cannot ping or traceroute to the two VMs on the LAN network.
Any help or ideas would be appreciated.
Thanks.
Ron