| Server IP : 93.86.61.54 / Your IP : 216.73.216.156 Web Server : Apache/2.4.62 (Ubuntu) System : Linux rasin.ddns.net 6.8.0-124-generic #124~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue May 26 21:05:19 UTC x86_64 User : www-data ( 33) PHP Version : 8.4.22 Disable Function : NONE MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /etc/fail2ban/filter.d/ |
Upload File : |
# Fail2Ban filter for sendmail authentication failures
#
[INCLUDES]
before = common.conf
[Definition]
_daemon = (?:sendmail|sm-(?:mta|acceptingconnections))
# "\w{14,20}" will give support for IDs from 14 up to 20 characters long
__prefix_line = %(known/__prefix_line)s(?:\w{14,20}: )?
addr = (?:IPv6:<IP6>|<IP4>)
prefregex = ^<F-MLFID>%(__prefix_line)s</F-MLFID><F-CONTENT>.+</F-CONTENT>$
failregex = ^(\S+ )?\[%(addr)s\]( \(may be forged\))?: possible SMTP attack: command=AUTH, count=\d+$
^AUTH failure \(LOGIN\):(?: [^:]+:)? authentication failure: checkpass failed, user=<F-USER>(?:\S+|.*?)</F-USER>, relay=(?:\S+ )?\[%(addr)s\](?: \(may be forged\))?$
ignoreregex =
journalmatch = _SYSTEMD_UNIT=sendmail.service
# DEV Notes:
#
# Author: Daniel Black