How to know the IP address of a computer room gateway to get online?

1. Want to know the simplest method 1 floor, ask the network management (probably impossible to tell you), the most complicated and stupid method, exhaustive method, try one by one according to your own network segment, generally speaking, the first or second IP of a network segment is the gateway (for example,192+5000.0000) The network administrator should not only manage the IP addresses of the machines in the network, but also manage the MAC addresses of the machines in the network, that is, you should write the IP address of the computer that wants to access the Internet as the address that can access the Internet, fill in the gateway address correctly, and rewrite the MAC address of the network card as the address of the network card that can access the Internet before you can access the Internet. To achieve this, it seems that we can only find the network management. ......