Difference between revisions of "Fail2ban"

From Proxmox VE
Jump to navigation Jump to search
m (move comment to own line)
Line 1: Line 1:
Note: article taken straight from [http://forum.proxmox.com/threads/16156-Fail2ban-for-Proxmox-3-1 this forum post]
 
 
 
== Protecting the web interface with fail2ban ==
 
== Protecting the web interface with fail2ban ==
  
<pre>aptitude install fail2ban</pre>
+
<pre>apt-get install fail2ban</pre>
  
 
Create, if does not exist, the file jail.local
 
Create, if does not exist, the file jail.local
Line 9: Line 7:
 
Note that jail.conf could be overwritten by fail2ban package updates, jail.local will not)
 
Note that jail.conf could be overwritten by fail2ban package updates, jail.local will not)
  
The following configuration works, unchanged, for Proxmox 3.x and 4.x (tested with 4.1)
+
The following configuration works, unchanged, for Proxmox 3.x and 4.x (last test with 4.3)
  
 
Add the following string to the end of this file /etc/fail2ban/jail.local :
 
Add the following string to the end of this file /etc/fail2ban/jail.local :
Line 43: Line 41:
  
 
<pre>
 
<pre>
/etc/init.d/fail2ban restart
+
systemctl restart fail2ban
 
</pre>
 
</pre>
  
 
== Links ==
 
== Links ==
 +
* [http://www.fail2ban.org/wiki/index.php/Main_Page]
 
* [http://extremeshok.com/blog/?page_id=810 Proxmox VE 2.1 - Harden Network]
 
* [http://extremeshok.com/blog/?page_id=810 Proxmox VE 2.1 - Harden Network]
 
* [http://forum.proxmox.com/threads/3583-How-To-implement-Fail2Ban-on-Host Forum Post]
 
* [http://forum.proxmox.com/threads/3583-How-To-implement-Fail2Ban-on-Host Forum Post]
 
* [http://forum.proxmox.com/threads/16156-Fail2ban-for-Proxmox-3-1 Forum Post for 3.1]
 
* [http://forum.proxmox.com/threads/16156-Fail2ban-for-Proxmox-3-1 Forum Post for 3.1]
  
[[Category: HOWTO]]
+
[[Category: HOWTO]] [[Category: Technology]]

Revision as of 12:56, 25 October 2016

Protecting the web interface with fail2ban

apt-get install fail2ban

Create, if does not exist, the file jail.local (settings in this file takes precedence over identical settings of jail.conf. Use jail.conf as a template, copying and enabling into jail.local what you are interested in. Note that jail.conf could be overwritten by fail2ban package updates, jail.local will not)

The following configuration works, unchanged, for Proxmox 3.x and 4.x (last test with 4.3)

Add the following string to the end of this file /etc/fail2ban/jail.local :

[proxmox]
enabled = true
port = https,http,8006
filter = proxmox
logpath = /var/log/daemon.log
maxretry = 3
# 1 hour
bantime = 3600

Create the file /etc/fail2ban/filter.d/proxmox.conf :

[Definition]
failregex = pvedaemon\[.*authentication failure; rhost=<HOST> user=.* msg=.*
ignoreregex =

You can test your configuration trying to GUI login with a wrong password or user, and then issue the command :

fail2ban-regex /var/log/daemon.log /etc/fail2ban/filter.d/proxmox.conf

You should have *at least* a "Failregex: 1 total" at the top of the "Results" section (and "1 matched" at the bottom)

Restart fail2ban:

systemctl restart fail2ban

Links