Comments on: Using fail2ban to Block Brute Force Attacks

By: Stopping Bruteforce SSH Attacks

Stopping Bruteforce SSH Attacks — Mon, 19 Sep 2011 01:50:57 +0000

[...] to lock yourself out just because you’ve forgotten your login details. There’s also a nice writeup here which goes into some depth about the various options [...]

By: Tapas Mishra

Tapas Mishra — Thu, 10 Feb 2011 15:51:05 +0000

An excellent how to can be read here
http://www.the-art-of-web.com/system/fail2ban/

By: Hosmoz

Hosmoz — Wed, 24 Nov 2010 02:27:06 +0000

Thanks very much for the info.I am setting up an ssh tunnel to redirect web traffic from public wifi to home server and this is exactly what I need to deploy.

By: links for 2010-06-23 « General Musing

links for 2010-06-23 « General Musing — Thu, 24 Jun 2010 01:05:53 +0000

[...] Using fail2ban to Block Brute Force Attacks | MDLog:/sysadmin (tags: tcp wrapper iptables ssh) [...]

By: Internetagentur

Internetagentur — Mon, 02 Mar 2009 18:06:51 +0000

Thank you … this little tutorial has me very helped.

By: rul3z » Blog Archive » Using fail2ban to Block Brute Force Attacks

rul3z » Blog Archive » Using fail2ban to Block Brute Force Attacks — Sat, 13 Sep 2008 04:18:12 +0000

[...] Read the rest of this entry » [...]

By: ??????? Fail2Ban | Cerebration

??????? Fail2Ban | Cerebration — Thu, 12 Jun 2008 15:27:08 +0000

[...] http://www.ducea.com/2006/07/03/using-fail2ban-to-block-brute-force-attacks/ [...]

By: kvz

kvz — Sun, 29 Jul 2007 10:21:31 +0000

Great article. fail2ban is very nice indeed, denyhosts is cool as well, because it maintains a central blacklist. Each method has it’s advantages in different situations. here’s another method that has the advantage that there is no log parsing involved which makes the banning instant.
It’s also faster because it all works on kernel level:

http://kevin.vanzonneveld.net/techblog/article/block_brute_force_attacks_with_iptables/

By: J

Fri, 15 Jun 2007 23:01:10 +0000

How do you run this as a service?

By: Paulo

Paulo — Mon, 23 Apr 2007 17:12:16 +0000

nothing show up on log….

I have a server running Centos 4.0, Python 2.3.4, fail2ban 0.6.2
auth.log

Apr 20 15:00:36 ithkul vsftpd(pam_unix)[9694]: authentication failure; logname= uid=0 euid=0 tty= ruser= rhost=66.63.172.178
Apr 20 15:00:39 ithkul vsftpd(pam_unix)[9694]: check pass; user unknown

fail2ban.log (only logs this)

2007-04-20 17:09:28,040 WARNING: Restoring firewall rules…

fail2ban.conf

[VSFTPD]
# Option: enabled
# Notes.: enable monitoring for this section.
# Values: [true | false] Default: false
#
enabled = true

# Option: logfile
# Notes.: logfile to monitor.
# Values: FILE Default: /var/log/secure
#
logfile = /var/log/auth.log

# Option: port
# Notes.: specifies port to monitor
# Values: [ NUM | STRING ] Default:
#
port = ftp

# Option: timeregex
# Notes.: regex to match timestamp in VSFTPD logfile.
# Values: [Mar 7 17:53:28]
# Default: \S{3}\s{1,2}\d{1,2} \d{2}:\d{2}:\d{2}
#
timeregex = \S{3}\s{1,2}\d{1,2} \d{2}:\d{2}:\d{2}

# Option: timepattern
# Notes.: format used in “timeregex” fields definition. Note that ‘%’ must be
# escaped with ‘%’ (see http://rgruet.free.fr/PQR2.3.html#timeModule)
# Values: TEXT Default: %%b %%d %%H:%%M:%%S
#
timepattern = %%b %%d %%H:%%M:%%S

# Option: failregex
# Notes.: regex to match the password failures messages in the logfile.
# Values: TEXT Default: Authentication failure|Failed password|Invalid user
#
failregex = vsftpd: \(pam_unix\) authentication failure; .* rhost=(?P\S+)

HELP, what is wrong? what can I do?