ubuntu开放防火墙端口

root@jbxue:$ sudo ufw enable  
Firewall started and enabled on system startup  
root@jbxue:$ sudo ufw allow 8080  
Rules updated  
root@jbxue:$ sudo ufw allow 8080/tcp  
Rule added  
root@jbxue:$ cat /etc/services | less  
root@jbxue:$ sudo ufw allow webcache  
Rules updated  
root@jbxue:$ sudo ufw status  
Firewall loaded  
  
To Action From  
-- ------ ----  
8080:tcp ALLOW Anywhere  
8080:udp ALLOW Anywhere  
8080:tcp ALLOW Anywhere