防火墙设置导致523错误[Linux]

我有一个问题，我试图使用iptables添加一些防火墙规则，以允许连接到MySQL数据库。这最终是一个错误，因为整个网站现在显示一个523来源是无法访问的错误

下面是一个iptable规则列表

-P FORWARD DROP
-P OUTPUT ACCEPT
-N FORWARD_IN_ZONES
-N FORWARD_IN_ZONES_SOURCE
-N FORWARD_OUT_ZONES
-N FORWARD_OUT_ZONES_SOURCE
-N FORWARD_direct
-N FWDI_mysqlrule
-N FWDI_mysqlrule_allow
-N FWDI_mysqlrule_deny
-N FWDI_mysqlrule_log
-N FWDI_public
-N FWDI_public_allow
-N FWDI_public_deny
-N FWDI_public_log
-N FWDO_mysqlrule
-N FWDO_mysqlrule_allow
-N FWDO_mysqlrule_deny
-N FWDO_mysqlrule_log
-N FWDO_public
-N FWDO_public_allow
-N FWDO_public_deny
-N FWDO_public_log
-N INPUT_ZONES
-N INPUT_ZONES_SOURCE
-N INPUT_direct
-N IN_mysqlrule
-N IN_mysqlrule_allow
-N IN_mysqlrule_deny
-N IN_mysqlrule_log
-N IN_public
-N IN_public_allow
-N IN_public_deny
-N IN_public_log
-N OUTPUT_direct
-N ufw-after-forward
-N ufw-after-input
-N ufw-after-logging-forward
-N ufw-after-logging-input
-N ufw-after-logging-output
-N ufw-after-output
-N ufw-before-forward
-N ufw-before-input
-N ufw-before-logging-forward
-N ufw-before-logging-input
-N ufw-before-logging-output
-N ufw-before-output
-N ufw-logging-allow
-N ufw-logging-deny
-N ufw-not-local
-N ufw-reject-forward
-N ufw-reject-input
-N ufw-reject-output
-N ufw-skip-to-policy-forward
-N ufw-skip-to-policy-input
-N ufw-skip-to-policy-output
-N ufw-track-forward
-N ufw-track-input
-N ufw-track-output
-N ufw-user-forward
-N ufw-user-input
-N ufw-user-limit
-N ufw-user-limit-accept
-N ufw-user-logging-forward
-N ufw-user-logging-input
-N ufw-user-logging-output
-N ufw-user-output
-A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -j INPUT_direct
-A INPUT -j INPUT_ZONES_SOURCE
-A INPUT -j INPUT_ZONES
-A INPUT -m conntrack --ctstate INVALID -j DROP
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A INPUT -j ufw-before-logging-input
-A INPUT -j ufw-before-input
-A INPUT -j ufw-after-input
-A INPUT -j ufw-after-logging-input
-A INPUT -j ufw-reject-input
-A INPUT -j ufw-track-input
-A INPUT -i eth0 -p tcp -m tcp --dport 3306 -j ACCEPT
-A FORWARD -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -i lo -j ACCEPT
-A FORWARD -j FORWARD_direct
-A FORWARD -j FORWARD_IN_ZONES_SOURCE
-A FORWARD -j FORWARD_IN_ZONES
-A FORWARD -j FORWARD_OUT_ZONES_SOURCE
-A FORWARD -j FORWARD_OUT_ZONES
-A FORWARD -m conntrack --ctstate INVALID -j DROP
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j ufw-before-logging-forward
-A FORWARD -j ufw-before-forward
-A FORWARD -j ufw-after-forward
-A FORWARD -j ufw-after-logging-forward
-A FORWARD -j ufw-reject-forward
-A FORWARD -j ufw-track-forward
-A OUTPUT -j OUTPUT_direct
-A OUTPUT -j ufw-before-logging-output
-A OUTPUT -j ufw-before-output
-A OUTPUT -j ufw-after-output
-A OUTPUT -j ufw-after-logging-output
-A OUTPUT -j ufw-reject-output
-A OUTPUT -j ufw-track-output
-A FORWARD_IN_ZONES -g FWDI_public
-A FORWARD_IN_ZONES_SOURCE -s 0.0.0.0/32 -g FWDI_mysqlrule
-A FORWARD_OUT_ZONES -g FWDO_public
-A FORWARD_OUT_ZONES_SOURCE -d 0.0.0.0/32 -g FWDO_mysqlrule
-A FWDI_mysqlrule -j FWDI_mysqlrule_log
-A FWDI_mysqlrule -j FWDI_mysqlrule_deny
-A FWDI_mysqlrule -j FWDI_mysqlrule_allow
-A FWDI_mysqlrule -p icmp -j ACCEPT
-A FWDI_public -j FWDI_public_log
-A FWDI_public -j FWDI_public_deny
-A FWDI_public -j FWDI_public_allow
-A FWDI_public -p icmp -j ACCEPT
-A FWDO_mysqlrule -j FWDO_mysqlrule_log
-A FWDO_mysqlrule -j FWDO_mysqlrule_deny
-A FWDO_mysqlrule -j FWDO_mysqlrule_allow
-A FWDO_public -j FWDO_public_log
-A FWDO_public -j FWDO_public_deny
-A FWDO_public -j FWDO_public_allow
-A INPUT_ZONES -g IN_public
-A INPUT_ZONES_SOURCE -s 0.0.0.0/32 -g IN_mysqlrule
-A IN_mysqlrule -j IN_mysqlrule_log
-A IN_mysqlrule -j IN_mysqlrule_deny
-A IN_mysqlrule -j IN_mysqlrule_allow
-A IN_mysqlrule -p icmp -j ACCEPT
-A IN_public -j IN_public_log
-A IN_public -j IN_public_deny
-A IN_public -j IN_public_allow
-A IN_public -p icmp -j ACCEPT
-A IN_public_allow -p tcp -m tcp --dport 22 -m conntrack --ctstate NEW -j ACCEPT
-A ufw-after-input -p udp -m udp --dport 137 -j ufw-skip-to-policy-input
-A ufw-after-input -p udp -m udp --dport 138 -j ufw-skip-to-policy-input
-A ufw-after-input -p tcp -m tcp --dport 139 -j ufw-skip-to-policy-input
-A ufw-after-input -p tcp -m tcp --dport 445 -j ufw-skip-to-policy-input
-A ufw-after-input -p udp -m udp --dport 67 -j ufw-skip-to-policy-input
-A ufw-after-input -p udp -m udp --dport 68 -j ufw-skip-to-policy-input
-A ufw-after-input -m addrtype --dst-type BROADCAST -j ufw-skip-to-policy-input
-A ufw-after-logging-forward -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW BLOCK] "
-A ufw-after-logging-input -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW BLOCK] "
-A ufw-before-forward -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A ufw-before-forward -p icmp -m icmp --icmp-type 3 -j ACCEPT
-A ufw-before-forward -p icmp -m icmp --icmp-type 11 -j ACCEPT
-A ufw-before-forward -p icmp -m icmp --icmp-type 12 -j ACCEPT
-A ufw-before-forward -p icmp -m icmp --icmp-type 8 -j ACCEPT
-A ufw-before-forward -j ufw-user-forward
-A ufw-before-input -i lo -j ACCEPT
-A ufw-before-input -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A ufw-before-input -m conntrack --ctstate INVALID -j ufw-logging-deny
-A ufw-before-input -m conntrack --ctstate INVALID -j DROP
-A ufw-before-input -p icmp -m icmp --icmp-type 3 -j ACCEPT
-A ufw-before-input -p icmp -m icmp --icmp-type 11 -j ACCEPT
-A ufw-before-input -p icmp -m icmp --icmp-type 12 -j ACCEPT
-A ufw-before-input -p icmp -m icmp --icmp-type 8 -j ACCEPT
-A ufw-before-input -p udp -m udp --sport 67 --dport 68 -j ACCEPT
-A ufw-before-input -j ufw-not-local
-A ufw-before-input -d 224.0.0.251/32 -p udp -m udp --dport 5353 -j ACCEPT
-A ufw-before-input -d 239.255.255.250/32 -p udp -m udp --dport 1900 -j ACCEPT
-A ufw-before-input -j ufw-user-input
-A ufw-before-output -o lo -j ACCEPT
-A ufw-before-output -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A ufw-before-output -j ufw-user-output
-A ufw-logging-allow -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW ALLOW] "
-A ufw-logging-deny -m conntrack --ctstate INVALID -m limit --limit 3/min --limit-burst 10 -j RETURN
-A ufw-logging-deny -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW BLOCK] "
-A ufw-not-local -m addrtype --dst-type LOCAL -j RETURN
-A ufw-not-local -m addrtype --dst-type MULTICAST -j RETURN
-A ufw-not-local -m addrtype --dst-type BROADCAST -j RETURN
-A ufw-not-local -m limit --limit 3/min --limit-burst 10 -j ufw-logging-deny
-A ufw-not-local -j DROP
-A ufw-skip-to-policy-forward -j DROP
-A ufw-skip-to-policy-input -j DROP
-A ufw-skip-to-policy-output -j ACCEPT
-A ufw-track-output -p tcp -m conntrack --ctstate NEW -j ACCEPT
-A ufw-track-output -p udp -m conntrack --ctstate NEW -j ACCEPT
-A ufw-user-input -p tcp -m tcp --dport 20 -j ACCEPT
-A ufw-user-input -p tcp -m tcp --dport 21 -j ACCEPT
-A ufw-user-input -s 0.0.0.0/32 -p tcp -m tcp --dport 3306 -j ACCEPT
-A ufw-user-input -s 0.0.0.0/32 -p udp -m udp --dport 3306 -j ACCEPT
-A ufw-user-input -p tcp -m tcp --dport 8080 -j ACCEPT
-A ufw-user-input -p udp -m udp --dport 8080 -j ACCEPT
-A ufw-user-input -p tcp -m tcp --dport 80 -j ACCEPT
-A ufw-user-input -p udp -m udp --dport 80 -j ACCEPT
-A ufw-user-input -p tcp -m tcp --dport 443 -j ACCEPT
-A ufw-user-input -p udp -m udp --dport 443 -j ACCEPT
-A ufw-user-input -p tcp -m multiport --dports 80,443 -m comment --comment "\'dapp_Apache%20Full\'" -j ACCEPT
-A ufw-user-input -p tcp -m tcp --dport 22 -j ACCEPT
-A ufw-user-input -p tcp -m tcp --dport 22 -m comment --comment "\'dapp_OpenSSH\'" -j ACCEPT
-A ufw-user-limit -m limit --limit 3/min -j LOG --log-prefix "[UFW LIMIT BLOCK] "
-A ufw-user-limit -j REJECT --reject-with icmp-port-unreachable
-A ufw-user-limit-accept -j ACCEPT

我正在使用Linux Ubuntu 18.04 多个来源表明，这可能是DNS设置错误，但我怀疑这是因为它发生在更改某些防火墙设置之后

使用来自外部源的ping可以很好地工作。 使用wget返回523原点错误。 但是，从localhost使用wget返回连接超时

我可以确认重启apache2和Nginx工作正常，没有问题

正在使用的端口列表：

tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      27120/nginx: master 
tcp        0      0 0.0.0.0:8080            0.0.0.0:*               LISTEN      27086/apache2       
tcp        0      0 0.0.0.0:10000           0.0.0.0:*               LISTEN      21829/perl          
tcp        0      0 127.0.0.53:53           0.0.0.0:*               LISTEN      410/systemd-resolve 
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      502/sshd            
tcp        0      0 0.0.0.0:443             0.0.0.0:*               LISTEN      27086/apache2       
tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN      27407/mariadbd      
tcp        0      0 127.0.0.1:6379          0.0.0.0:*               LISTEN      562/redis-server 12 
tcp6       0      0 :::80                   :::*                    LISTEN      27120/nginx: master 
tcp6       0      0 :::22                   :::*                    LISTEN      502/sshd            
udp        0      0 0.0.0.0:10000           0.0.0.0:*                           21829/perl          
udp        0      0 127.0.0.53:53           0.0.0.0:*                           410/systemd-resolve

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非常感谢您的帮助。

好吧，我禁用了iptables，它正常工作了。我花了很长时间才弄明白