06 December, 2017

#How_Do_I_Find_Out_Linux_Gateway / #Router_IP_Address?

How do I find out my #gateway IP for a #computer or a #network device that allows or controls access to another computer or network under #Linux / #UNIX operating systems?
The ansver is almost simple for unix users...

A gateway is a network point that acts as an entrance to another network. On the Internet, a node or stopping point can be either a gateway node or a host (end-point) node. Both the computers of Internet users and the computers that serve pages to users are host nodes. The computers that control traffic within your company’s network or at your local Internet service provider (ISP) are gateway nodes. In the network for an enterprise, a computer server acting as a gateway node is often also acting as a proxy server and a firewall server. A gateway is often associated with both a router, which knows where to direct a given packet of data that arrives at the gateway, and a switch, which furnishes the actual path in and out of the gateway for a given packet.

You need to use route command. Open an Terminal and type this command will show you #IP_routing_tables. It can be also use to print gateway / router IP address. Type the following command to see #default_gateway:

$ route -n

Kernel IP routing table
Destination    Gateway       Genmask           Flags   Metric   Ref   Use   Iface                UG     100         0      0       enp5s0    U        100         0      0       enp5s0 is gateway IP address for our computer.
The flag:
U indicates that route is up
G indicates that it is gateway.

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