如何实现网络分段（How to implement network segmentation）.doc

如何实现网络分段（How to implement network segmentation） 1. Network segment A host settings Install two network cards, the IP address of the first network card is set to 192.168.1.1, the gateway is not set; the IP address of the second network card is set to 192.168.2.254, and the gateway is set to 192.168.1.10. The subnet mask is set to 255.255.255.0. ? two, segment B host settings Install two network cards, the IP address of the first network card is set to 192.168.2.1, the gateway is not set; the IP address of the second network card is set to 192.168.1.10, and the gateway is set to 192.168.2.254. The subnet mask is set to 255.255.255.0. ? three, client settings ?? And the client above the same settings. ? four, explanation Double network card to achieve network segmentation, the way to achieve more, users can choose according to their own circumstances. The biggest advantage of this approach is simple, practical, low cost, but when the network size is a bit larger, this way is not easy to manage, and there will be network congestion. IP forwarding? In order to implement network interconnection in the first way, it is necessary to use a host (two network cards) between each two segments to connect two different network segments. If the network size is slightly larger, more complicated network, the network maintenance and management in this way, so we can set up a host IP transponder, a segment of the computer to access other computers on the network, IP forwarded by the host. IP forwarding refers to the process by which a IP packet received by a network interface is forwarded to another network interface. This means that the host that performs the IP forwarding is neither a data source nor a receiver. This host is essentially connected to two or more networks. The host receives the IP packet from a network and analyzes the IP packet to determine which network to forward the IP packet to using the routing mechanism, and then sends the IP packet to the destination using oth