无法在 Ubuntu Server 上打开端口

Question

root@server:~# ufw allow 83973/tcp
Rules updated
Rules updated (v6)
root@server:~# sudo ufw status verbose
Status: inactive
root@server:~# sudo ufw enable
Command may disrupt existing ssh connections. Proceed with operation (y|n)? y
Firewall is active and enabled on system startup

root@server:~# sudo ufw status verbose
Status: active
Logging: on (low)
Default: deny (incoming), allow (outgoing), disabled (routed)
New profiles: skip

To                         Action      From
--                         ------      ----
83973                      ALLOW IN    Anywhere                  
83973/tcp                  ALLOW IN    Anywhere                  
83973 (v6)                 ALLOW IN    Anywhere (v6)             
83973/tcp (v6)             ALLOW IN    Anywhere (v6)             

root@server:~# 

我正在尝试添加监听端口 83973，但没有成功。请指教

此致

Answer 1

我可能遗漏了一些东西，但高于 65535 的 TCP 端口是不可能的，因为它们会溢出协议中专用于端口的 16 位。