NAT configuration under iptables

In iptables, one NAT server can access the Internet, and the other server cannot access the Internet. However, if one of them is a Linux system, it will be easy. Configure iptables NAT. Step: 1. Set etc/sysctl. net. ipv4.ip. after forward = 0, change 0 to 1. 2. start iptables: # service iptables start www.2cto.com. 3. The most important step is: # iptables-t nat-a postrouting-o eth0-s 192.168.10.100/24-j SNAT-to Internet ip address 4. View nat-related iptables rules: # iptables-t nat -- list (pay attention to the POSTROUTING item) 5. Clear the filter and tables rules: # iptables-F # iptables-X 6. Then the operation is complete, set the ip address and CIDR block on the other server to match the preceding ip address and CIDR block. Author hxai11