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Old 14th October 2008, 05:36
tristanlee85 tristanlee85 is offline
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Default Fail2Ban not banning?

I just installed this and configured it on my FC7 server based on the write-up on here.

This is my jail.conf file:

# Fail2Ban configuration file
# Author: Cyril Jaquier
# $Revision: 617 $

# The DEFAULT allows a global definition of the options. They can be override
# in each jail afterwards.


# "ignoreip" can be an IP address, a CIDR mask or a DNS host. Fail2ban will not
# ban a host which matches an address in this list. Several addresses can be
# defined using space separator.
ignoreip =

# "bantime" is the number of seconds that a host is banned.
bantime  = 600

# A host is banned if it has generated "maxretry" during the last "findtime"
# seconds.
findtime  = 600

# "maxretry" is the number of failures before a host get banned.
maxretry = 3

# "backend" specifies the backend used to get files modification. Available
# options are "gamin", "polling" and "auto". This option can be overridden in
# each jail too (use "gamin" for a jail and "polling" for another).
# gamin:   requires Gamin (a file alteration monitor) to be installed. If Gamin
#          is not installed, Fail2ban will use polling.
# polling: uses a polling algorithm which does not require external libraries.
# auto:    will choose Gamin if available and polling otherwise.
backend = auto

# This jail corresponds to the standard configuration in Fail2ban 0.6.
# The mail-whois action send a notification e-mail with a whois request
# in the body.


enabled  = true
filter   = sshd
action   = iptables[name=SSH, port=ssh, protocol=tcp]
           sendmail-whois[name=SSH, dest=root,]
logpath  = /var/log/secure
maxretry = 5


enabled  = true
filter   = proftpd
action   = iptables[name=ProFTPD, port=ftp, protocol=tcp]
logpath  = /var/log/proftpd/proftpd.log
maxretry = 6

# This jail forces the backend to "polling".


enabled  = true
filter   = sasl
backend  = polling
action   = iptables[name=sasl, port=smtp, protocol=tcp]
logpath  = /var/log/mail.log

# Here we use TCP-Wrappers instead of Netfilter/Iptables. "ignoreregex" is
# used to avoid banning the user "myuser".


enabled     = false
filter      = sshd
action      = hostsdeny
ignoreregex = for myuser from
logpath     = /var/log/sshd.log

# This jail demonstrates the use of wildcards in "logpath".
# Moreover, it is possible to give other files on a new line.


enabled  = true
filter	 = apache-auth
action   = hostsdeny
logpath  = /var/log/apache*/*error.log
maxretry = 6

# The hosts.deny path can be defined with the "file" argument if it is
# not in /etc.


enabled  = true
filter   = postfix
action   = hostsdeny[file=/not/a/standard/path/hosts.deny]
logpath  = /var/log/postfix.log
bantime  = 300

# Do not ban anybody. Just report information about the remote host.
# A notification is sent at most every 600 seconds (bantime).


enabled  = true
filter   = vsftpd
action   = sendmail-whois[name=VSFTPD,]
logpath  = /var/log/vsftpd.log
maxretry = 5
bantime  = 1800

# Same as above but with banning the IP address.


enabled  = true
filter   = vsftpd
action   = iptables[name=VSFTPD, port=ftp, protocol=tcp]
logpath  = /var/log/vsftpd.log
maxretry = 5
bantime  = 1800

# Ban hosts which agent identifies spammer robots crawling the web
# for email addresses. The mail outputs are buffered.


enabled  = true
filter   = apache-badbots
action   = iptables-multiport[name=BadBots, port="http,https"]
           sendmail-buffered[name=BadBots, lines=5,]
logpath  = /var/www/*/logs/access_log
bantime  = 172800
maxretry = 1

# Use shorewall instead of iptables.


enabled  = true
filter   = apache-noscript
action   = shorewall
logpath  = /var/log/apache2/error_log

# This jail uses ipfw, the standard firewall on FreeBSD. The "ignoreip"
# option is overridden in this jail. Moreover, the action "mail-whois" defines
# the variable "name" which contains a comma using "". The characters '' are
# valid too.


enabled  = true
filter   = sshd
action   = ipfw[localhost=]
logpath  = /var/log/auth.log
ignoreip =

# These jails block attacks against named (bind9). By default, logging is off
# with bind9 installation. You will need something like this:
# logging {
#     channel security_file {
#         file "/var/log/named/security.log" versions 3 size 30m;
#         severity dynamic;
#         print-time yes;
#     };
#     category security {
#         security_file;
#     };
# }
# in your named.conf to provide proper logging.
# This jail blocks UDP traffic for DNS requests.


enabled  = true
filter   = named-refused
action   = iptables-multiport[name=Named, port="domain,953", protocol=udp]
logpath  = /var/log/named/security.log
ignoreip =

# This jail blocks TCP traffic for DNS requests.


enabled  = true
filter   = named-refused
action   = iptables-multiport[name=Named, port="domain,953", protocol=tcp]
logpath  = /var/log/named/security.log
ignoreip =
I am tailing my /var/log/messages log and i can see someone constantly trying to log into via FTP, but when I look at the fail2ban logs, I don't see anything trying to stop them.

[root@ns1 ~]# tail -f /var/log/fail2ban.log 
Fail2Ban" | /usr/sbin/sendmail -f <sender> <dest>
2008-10-13 22:31:13,601 fail2ban.actions.action: INFO   Set actionStart = printf %b "Subject: [Fail2Ban] <name>: started
From: Fail2Ban <<sender>>
To: <dest>\n
The jail <name> has been started successfully.\n
Fail2Ban" | /usr/sbin/sendmail -f <sender> <dest>
2008-10-13 22:31:13,605 fail2ban.actions.action: INFO   Set actionUnban = 
2008-10-13 22:31:13,608 fail2ban.actions.action: INFO   Set actionCheck =
Is my config not set up correctly?
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