Hi I installed Fail2ban on FC9 as per the how to on http://www.howtoforge.com/preventing-brute-force-attacks-with-fail2ban-on-fedora9 But it doesn't seem to block the authentication failure attempt even when I do a fail2ban-regex on the /var/log/messages it doesn't detect the auth failures although there are failures on it. Any idea why this is happening? I use this for SSHD auth failure events. Below is my jail.conf # "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 = 127.0.0.1 192.168.8.0/24 # "bantime" is the number of seconds that a host is banned. bantime = 7200 # 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 = true filter = sshd action = iptables[name=SSH, port=ssh, protocol=tcp] sendmail-whois[name=SSH, [email protected], [email protected]] logpath = /var/log/secure maxretry = 3
I did as what falko told me and it seems to work now ..when I do a fail2ban-regex it does capture the auth fail events. thanks falco ..so the correction is point log to be scanned to /var/log/messages
