Connect two CIDR blocks with Linux servers

Environment: two network segments, 192.168.1. * With 192.168.100. * The two vswitches cannot communicate with each other. 192.168.100. * There is a DNS on the network segment. One WEB server requires: 192.168.1. * access 192.168.100. * WEB server. implementation: Find a dual-nic Linux system. enable the routing function, # vietcsysctl. confnet. ipv4.ip_for

Environment: Two CIDR blocks, 192.168.1. * And 192.168.100. * cannot communicate with each other.

192.168.100. * There is a DNS server on the network segment.

Requirement: 192.168.1. * You can access the WEB server of 192.168.100.

Implementation:

Find a dual-nic Linux system. Enable the routing function,

1. # Vi/etc/sysctl. conf
2. Net. ipv4.ip _ forward = 1
3. # Sysctl-p

 

1. Eth0: 192.168.100.253
2. Eth1: 192.168.1.253

Client 192.168.1. * Configuration:

Add a route entry:

1. RouteDd-P 192.168.100.0 mask 255.255.255.0 192.168.1.253

Configure DNS to 192.168.100.

192.168.100. * WEB server configuration on the network segment:

1. Route add-net 192.168.1.0 gw 192.168.100.253 netmask 255.255.255.0