[AWS] NAT INSTANCE setting (iptables)

EC2 Instance Network Setting

• EC2 메인 콘솔 → '인스턴스' 탭 → EC2 서버 선택 → '작업 ' → '네트워킹 ' → '소스/대상 확인 변경 ' 선택
• '소스/대상 확인 ' 체크박스 활성화

 

install iptables-services

yum install iptables-services -y

 

NAT Table Setting

# vim /etc/sysconfig/iptables
*nat
-A POSTROUTING -j MASQUERADE
COMMIT

 

Linux Kernel Parameter Setting

# vim /etc/sysctl.conf
net.ipv4.ip_forward=1

 

Private Routing Table Setting

Destination	Target
0.0.0.0/0	instance → i-********* (BASTION SERVER ID)