linux 端口映射設置

 

 

### 端口轉發
iptables -t nat -A PREROUTING -p tcp --dport 新端口 -j REDIRECT --to-ports 舊端口

### 服務器中轉
firewall-cmd --add-forward-port=port=1433:proto=tcp:toaddr=113.88.12.56:toport=1433
firewall-cmd --reload
firewall-cmd --list-all