远程连接Postgres，在iptables中为Postgres打开5432端口

Question

我正在尝试远程连接到 Postgres，但我需要在 iptables 中打开端口 5432。我目前的iptables配置如下：

*filter


#  Allows all loopback (lo0) traffic and drop all traffic to 127/8 that doesn't use lo0
-A INPUT -i lo -j ACCEPT
-A INPUT ! -i lo -d 127.0.0.0/8 -j REJECT


#  Accepts all established inbound connections
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT


#  Allows all outbound traffic
#  You can modify this to only allow certain traffic
-A OUTPUT -j ACCEPT


# Allows HTTP and HTTPS connections from anywhere (the normal ports for websites)
-A INPUT -p tcp --dport 80 -j ACCEPT
-A INPUT -p tcp --dport 443 -j ACCEPT


#  Allows SSH connections
#
# THE -dport NUMBER IS THE SAME ONE YOU SET UP IN THE SSHD_CONFIG FILE
#
-A INPUT -p tcp -m state --state NEW --dport 30000 -j ACCEPT


# Allow ping
-A INPUT -p icmp -m icmp --icmp-type 8 -j ACCEPT


# log iptables denied calls
-A INPUT -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7


# Reject all other inbound - default deny unless explicitly allowed policy
-A INPUT -j REJECT
-A FORWARD -j REJECT

COMMIT

我必须在 iptables 中添加什么才能打开端口？我正在尝试在不同的服务器上安装 phppgadmin 以访问 postgres 数据库。

谢谢你。

Answer 1

在您添加的“log iptables denied”和“reject all other inbound”命令之前

-A INPUT -p tcp --dport 5432 -s xxx.xxx.xxx.xxx -j ACCEPT

其中 xxx.xxx.xxx.xxx 是您要连接的服务器的 IP，因此您不会向全世界开放 postgres。