查看“Ufw on debian”的源代码

 [[category:ops]]  [[category:debian]]  

=*  install=

 apt  install ufw

=* Configuration=
 <pre>
 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
</pre>


=* Firewall Rules=
<pre>
 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 </pre>



==** Port Ranges ==
<pre>
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</pre>

==** IP address==
<pre>An IP address may also be used:

 ufw allow from 111.222.333.444</pre>

=* Deleting Rules=
<pre>
Rules may be deleted with the following command:

 ufw delete allow ssh</pre>
 
 
=* 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

[https://zhuanlan.zhihu.com/p/36646621 ubuntu ufw 防火墙]