# Fail2Ban configuration file # # Author: Cyril Jaquier # # $Revision: 747 $ # # The DEFAULT allows a global definition of the options. They can be override # in each jail afterwards. [DEFAULT] # "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 = 127.0.0.1 # "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. [ssh-iptables] enabled = false filter = sshd action = iptables[name=SSH, port=ssh, protocol=tcp] sendmail-whois[name=SSH, dest=you@mail.com, sender=fail2ban@mail.com] logpath = /var/log/sshd.log maxretry = 5 [proftpd-iptables] enabled = false filter = proftpd action = iptables[name=ProFTPD, port=ftp, protocol=tcp] sendmail-whois[name=ProFTPD, dest=you@mail.com] logpath = /var/log/proftpd/proftpd.log maxretry = 6 # This jail forces the backend to "polling". [sasl-iptables] enabled = false filter = sasl backend = polling action = iptables[name=sasl, port=smtp, protocol=tcp] sendmail-whois[name=sasl, dest=you@mail.com] logpath = /var/log/mail.log # Here we use TCP-Wrappers instead of Netfilter/Iptables. "ignoreregex" is # used to avoid banning the user "myuser". [ssh-tcpwrapper] enabled = false filter = sshd action = hostsdeny sendmail-whois[name=SSH, dest=you@mail.com] 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. [apache-tcpwrapper] enabled = false filter = apache-auth action = hostsdeny logpath = /var/log/apache*/*error.log /home/www/myhomepage/error.log maxretry = 6 # The hosts.deny path can be defined with the "file" argument if it is # not in /etc. [postfix-tcpwrapper] enabled = false filter = postfix action = hostsdeny[file=/not/a/standard/path/hosts.deny] sendmail[name=Postfix, dest=you@mail.com] 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). [vsftpd-notification] enabled = false filter = vsftpd action = sendmail-whois[name=VSFTPD, dest=you@mail.com] logpath = /var/log/vsftpd.log maxretry = 5 bantime = 1800 # Same as above but with banning the IP address. [vsftpd-iptables] enabled = false filter = vsftpd action = iptables[name=VSFTPD, port=ftp, protocol=tcp] sendmail-whois[name=VSFTPD, dest=you@mail.com] 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. [apache-badbots] enabled = false filter = apache-badbots action = iptables-multiport[name=BadBots, port="http,https"] sendmail-buffered[name=BadBots, lines=5, dest=you@mail.com] logpath = /var/www/*/logs/access_log bantime = 172800 maxretry = 1 # Use shorewall instead of iptables. [apache-shorewall] enabled = false filter = apache-noscript action = shorewall sendmail[name=Postfix, dest=you@mail.com] logpath = /var/log/apache2/error_log # Ban attackers that try to use PHP's URL-fopen() functionality # through GET/POST variables. - Experimental, with more than a year # of usage in production environments. [php-url-fopen] enabled = false port = http,https filter = php-url-fopen logpath = /var/www/*/logs/access_log maxretry = 1 # A simple PHP-fastcgi jail which works with lighttpd. # If you run a lighttpd server, then you probably will # find these kinds of messages in your error_log: # ALERT – tried to register forbidden variable ‘GLOBALS’ # through GET variables (attacker '1.2.3.4', file '/var/www/default/htdocs/index.php') # This jail would block the IP 1.2.3.4. [lighttpd-fastcgi] enabled = false port = http,https filter = lighttpd-fastcgi # adapt the following two items as needed logpath = /var/log/lighttpd/error.log maxretry = 2 # 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. [ssh-ipfw] enabled = false filter = sshd action = ipfw[localhost=192.168.0.1] sendmail-whois[name="SSH,IPFW", dest=you@mail.com] logpath = /var/log/auth.log ignoreip = 168.192.0.1 # 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. # !!! WARNING !!! # Since UDP is connectionless protocol, spoofing of IP and immitation # of illegal actions is way too simple. Thus enabling of this filter # might provide an easy way for implementing a DoS against a chosen # victim. See # http://nion.modprobe.de/blog/archives/690-fail2ban-+-dns-fail.html # Please DO NOT USE this jail unless you know what you are doing. # # [named-refused-udp] # # enabled = false # filter = named-refused # action = iptables-multiport[name=Named, port="domain,953", protocol=udp] # sendmail-whois[name=Named, dest=you@mail.com] # logpath = /var/log/named/security.log # ignoreip = 168.192.0.1 # This jail blocks TCP traffic for DNS requests. [named-refused-tcp] enabled = false filter = named-refused action = iptables-multiport[name=Named, port="domain,953", protocol=tcp] sendmail-whois[name=Named, dest=you@mail.com] logpath = /var/log/named/security.log ignoreip = 168.192.0.1