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在 Ubuntu AWS 上打开端口 80

tag-icon • tag-icon firewall amazon-web-services ubuntu-12.04 ufw
在 Ubuntu AWS 上打开端口 80

我在 AWS 实例中托管的机器上运行 Tomcat 服务器ubuntu。我可以通过 访问服务器，public_ip:8080但当我将监听端口从 更改为 时，server.xml连接8080被80远程主机拒绝。

端口号80已在 上启用AWS firewall。

我检查ufw过了，sudo ufw status但结果是inactive

ufw前端是底层防火墙机制吗？

我如何启用80端口firewall？

预先感谢。

输出iptables -S：

-P INPUT ACCEPT
-P FORWARD ACCEPT
-P OUTPUT ACCEPT

输出netstat -punta

Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:3306            0.0.0.0:*               LISTEN      785/mysqld
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      613/sshd
tcp        0      0 172.31.1.56:22          92.45.23.114:3913       ESTABLISHED 5825/sshd: ubuntu [
tcp        0      0 172.31.1.56:22          92.45.23.114:19374      ESTABLISHED 7320/sshd: ubuntu [
tcp        0      0 172.31.1.56:22          92.45.23.114:28051      ESTABLISHED 6901/sshd: ubuntu [
tcp        0    272 172.31.1.56:22          92.45.23.114:9327       ESTABLISHED 7428/sshd: ubuntu [
tcp        0      0 172.31.1.56:22          92.45.23.114:7597       ESTABLISHED 7034/sshd: ubuntu [
tcp        0      0 127.0.0.1:3306          127.0.0.1:45655         ESTABLISHED 785/mysqld
tcp6       0      0 127.0.0.1:8005          :::*                    LISTEN      7275/java
tcp6       0      0 :::8080                 :::*                    LISTEN      7275/java
tcp6       0      0 :::22                   :::*                    LISTEN      613/sshd
tcp6       0      0 127.0.0.1:45655         127.0.0.1:3306          ESTABLISHED 7275/java
udp        0      0 0.0.0.0:68              0.0.0.0:*                           538/dhclient3

netstat -na |grep \:80将端口更改为之前的输出80：

tcp6       0      0 127.0.0.1:8005          :::*                    LISTEN
tcp6       0      0 :::8080                 :::*                    LISTEN

netstat -na |grep \:80将端口更改为后的输出80：

tcp6       0      0 127.0.0.1:8005          :::*                    LISTEN

端口上的浏览器输出80：

ERROR

The requested URL could not be retrieved

The following error was encountered while trying to retrieve the URL: http://54.194.236.229/TransportationAutomation/personnel.xhtml

Connection to 54.194.236.229 failed.

The system returned: (111) Connection refused

The remote host or network may be down. Please try the request again.

Your cache administrator is webmaster.


Generated Fri, 14 Feb 2014 15:01:06 GMT by proxy (squid/2.7.STABLE7)

端口定义部分server.xml

<Connector port="8080" protocol="HTTP/1.1"
           connectionTimeout="20000"
           URIEncoding="UTF-8"
           redirectPort="8443" />

启动 tomcat 时 Catalina.out 的一部分port 80：

Feb 14, 2014 3:04:25 PM org.apache.coyote.AbstractProtocol init
SEVERE: Failed to initialize end point associated with ProtocolHandler ["http-bio-80"]
java.net.BindException: Permission denied <null>:80
  at org.apache.tomcat.util.net.JIoEndpoint.bind(JIoEndpoint.java:391)
  at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:554)
  at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:409)
  at org.apache.coyote.http11.AbstractHttp11JsseProtocol.init(AbstractHttp11JsseProtocol.java:119)
  at org.apache.catalina.connector.Connector.initInternal(Connector.java:956)
  at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
  at org.apache.catalina.core.StandardService.initInternal(StandardService.java:559)
  at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
  at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:815)
  at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
  at org.apache.catalina.startup.Catalina.load(Catalina.java:594)
  at org.apache.catalina.startup.Catalina.load(Catalina.java:619)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:606)
  at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:281)
  at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:449)
Caused by: java.net.BindException: Permission denied
  at java.net.PlainSocketImpl.socketBind(Native Method)
  at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:376)
  at java.net.ServerSocket.bind(ServerSocket.java:376)
  at java.net.ServerSocket.<init>(ServerSocket.java:237)
  at java.net.ServerSocket.<init>(ServerSocket.java:181)
  at org.apache.tomcat.util.net.DefaultServerSocketFactory.createSocket(DefaultServerSocketFactory.java:49)
  at org.apache.tomcat.util.net.JIoEndpoint.bind(JIoEndpoint.java:378)
... 17 more

更新2：

我通过安装了 tomcat，apt-get所以它是 tomcat 的重新打包版本。这里它说以 root 身份运行 tomcat 将解决问题，但是这里它说Tomcat should not be run under the root user.有没有可能的方法来用重新打包的 tomcat 实例来处理它？

更新 3：

我猜这是我的问题的答案

答案1

是的。它就像一个易于使用的 iptables 版本。尝试编写，以查看 iptables 防火墙规则：

$ sudo iptables -L

您可以使用以下方式打开端口 80：

$ sudo iptables -A INPUT -p tcp --dport 80 -j ACCEPT

如果您需要的话，我可以为您描述这一行。告诉我就好 :-)

答案2

这对我有用：

以 root 身份运行：

iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080

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