Erh Ethereum

1. Eth0 to eth3 are the interface numbering methods of some devices that have not used AMTT. They are not necessarily related to LAN port and WAN port. This numbering method is the default interface name of Linux. The naming here is similar to that of some devices identifying network port 1, network port 2, network port 3 and network port 4. This kind of device has no clear LAN port and WAN port, which interface is connected to external network and internal network according to your configuration mode. So your question is basically answered. As for whether this device is a router, you don't specify the model, and I can't check it. I can't answer that. I recommend that you can check it on the Internet according to its model. You can usually check its user manual and see it.