Ufw on debian

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Evan讨论 | 贡献2020年2月28日 (五) 02:44的版本 →‎* see also
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* install

apt  install ufw

* Configuration

 ufw enable 
Command may disrupt existing ssh connections. Proceed with operation (y|n)? y
Firewall is active and enabled on system startup



ufw default deny incoming
ufw default allow outgoing

ufw status verbose


* Firewall Rules

 ufw app list
 

 ufw  allow 'SSH'
ufw  allow  22/tcp
 ufw  allow WWW #其实就是80

 
 
 ufw allow 'Nginx HTTP'


ufw allow 53/tcp 


** Port Ranges

Port ranges may also be specified, a simple example for tcp would be:

  ufw allow 1000:2000/tcp

and for udp:

  ufw allow 1000:2000/udp

** IP address

An IP address may also be used:

 ufw allow from 111.222.333.444

* Deleting Rules

Rules may be deleted with the following command:

 ufw delete allow ssh


troubleshooting


openssh都连接上去 

这个导致上不了的 
 ufw default deny incoming

如何确定在 ssh这后再deny incoming 呢  参考iptalbes ?




* see also

https://wiki.debian.org/Uncomplicated%20Firewall%20%28ufw%29


https://help.ubuntu.com/community/UFW

https://www.digitalocean.com/community/tutorials/how-to-setup-a-firewall-with-ufw-on-an-ubuntu-and-debian-cloud-server

ubuntu ufw 防火墙