Question

我是ubuntu服务器的新手。我试图在服务器上打开端口9090进行openfire，但是无法这样做。我在我们的服务器上安装了ufw。

到目前为止我做了什么。

nmap localhost -p 9090

Starting Nmap 6.40 ( http://nmap.org ) at 2015-04-21 12:36 IST
Nmap scan report for localhost (127.0.0.1)
Host is up (0.000044s latency).
Other addresses for localhost (not scanned): 127.0.0.1
PORT     STATE  SERVICE
9090/tcp closed zeus-admin
Nmap done: 1 IP address (1 host up) scanned in 0.03 seconds

输出 sudo ufw status

Status: active

To                         Action      From
--                         ------      ----
9091/tcp                   ALLOW       Anywhere
5222/tcp                   ALLOW       Anywhere
7777/tcp                   ALLOW       Anywhere
7443/tcp                   ALLOW       Anywhere
7070/tcp                   ALLOW       Anywhere
3478/tcp                   ALLOW       Anywhere
3479/tcp                   ALLOW       Anywhere
22                         ALLOW       Anywhere
80                         ALLOW       Anywhere
3306                       ALLOW       Anywhere
22/tcp                     ALLOW       Anywhere
9090/tcp                   ALLOW       Anywhere
9090                       ALLOW       Anywhere
9091/tcp (v6)              ALLOW       Anywhere (v6)
5222/tcp (v6)              ALLOW       Anywhere (v6)
7777/tcp (v6)              ALLOW       Anywhere (v6)
7443/tcp (v6)              ALLOW       Anywhere (v6)
7070/tcp (v6)              ALLOW       Anywhere (v6)
3478/tcp (v6)              ALLOW       Anywhere (v6)
3479/tcp (v6)              ALLOW       Anywhere (v6)
22 (v6)                    ALLOW       Anywhere (v6)
3306 (v6)                  ALLOW       Anywhere (v6)
22/tcp (v6)                ALLOW       Anywhere (v6)
9090/tcp (v6)              ALLOW       Anywhere (v6)
9090 (v6)                  ALLOW       Anywhere (v6)

使用ufw删除9090端口并再次添加。但它的显示端口仍然关闭。

nmap outpu

nmap localhost 

Starting Nmap 6.40 ( http://nmap.org ) at 2015-04-21 12:42 IST
Nmap scan report for localhost (127.0.0.1)
Host is up (0.00037s latency).
Other addresses for localhost (not scanned): 127.0.0.1
Not shown: 997 closed ports
PORT     STATE SERVICE
22/tcp   open  ssh
80/tcp   open  http
3306/tcp open  mysql

Nmap done: 1 IP address (1 host up) scanned in 0.05 seconds

任何人都可以帮助我解决问题

Answer 1

您不仅需要允许使用ufw访问端口，还需要一个程序来监听该端口，以便将其视为开放。

您可以使用lsof -i :9090或netstat -tln | grep 9090等命令检查端口9090上是否有某些内容正在侦听。

Answer 2

这是因为您没有应用程序侦听端口。 nmap结果有六种端口状态。 closed州为A closed port is accessible (it receives and responds to Nmap probe packets), but there is no application listening on it.

您可以参考nmap链接，了解有关这六个州的更多信息。

启用以打开关闭端口9090

2 个答案: