similar to: Fail2Ban and the Dovecot log

On Fri, May 22, 2020 2:05 pm, Adi Pircalabu wrote: > On 22-05-2020 10:38, Voytek Eymont wrote: > > Hardly a Dovecot issue. Can you please post the output of this command? > /usr/bin/fail2ban-regex /var/log/dovecot.log > /etc/fail2ban/filter.d/dovecot.conf Adi, thanks, what I get is: # /usr/bin/fail2ban-regex /var/log/dovecot.log /etc/fail2ban/filter.d/dovecot.conf Running

For dovecot 2.1 as per wiki2, is this still valid? noticed a problem before and saw it does seem to be triggering, I use: maxretry = 6 findtime = 600 bantime = 3600 and there was like, 2400 hits in 4 minutes, it is pointing to the correct log file, but I am no expert with fail2ban, so not sure if the log format of today is compatible with the wiki2 entry filter.d/dovecot.conf [Definition]

Hello list. I have a question for fail2ban for bad logins on sasl. I use sasl, sendmail and cyrus-imapd. In jail.conf I use the following syntax: [sasl-iptables] enabled = true filter = sasl backend = polling action = iptables[name=sasl, port=smtp, protocol=tcp] sendmail-whois[name=sasl, dest=my at email] logpath = /var/log/maillog maxretry = 6 and the following filter:

> On 11 Sep 2017, at 5:10 pm, Christian Kivalo <ml+dovecot at valo.at> wrote: > > On 2017-09-11 08:57, James Brown wrote: >> I have turned on 'auth_debug_passwords=yes? in dovecot.conf. >> I?m trying to get Fail2ban to detect this log line: >> Sep 11 15:52:49 mail dovecot[54239]: auth-worker(10094): sql(user at bordo.com.au <mailto:user at

I have fail2ban working for EVERYTHING else except dovecot. I have tried using my own custom regex in conjunction with the regex on the dovecot.org site. Neither are picked up by fail2ban and I'm trying to use an imminent attack agaist dovecot, going on now, to my advantage to see when I get the right regexp. Here are my current ones: failregex = .*dovecot: (?:pop3-login|imap-login):

I have turned on 'auth_debug_passwords=yes? in dovecot.conf. I?m trying to get Fail2ban to detect this log line: Sep 11 15:52:49 mail dovecot[54239]: auth-worker(10094): sql(user at bordo.com.au <mailto:user at bordo.com.au>,::1,<L2xqieNYeM4AAAAAAAAAAAAAAAAAAAAB>): Password mismatch (given password: 2) I?ve added it as the last line of my dovecot filter regex: failregex =

The failregex statement in my jail.conf file is: * failregex* = NOTICE.* .*: Registration from '.*' failed for '<HOST>' - Wrong password NOTICE.* .*: Registration from '.*' failed for '<HOST>' - No matching peer found NOTICE.* .*: Registration from '.*' failed for '<HOST>' - Username/auth name mismatch

hi dovecot filter for fail2ban do not match: dovecot: pop3-login: Aborted login (tried to use disallowed plaintext auth): user=<>, rip=67 dovecot filter: failregex = (?: pop3-login|imap-login): (?:Authentication failure|Aborted login \(auth failed|Aborted login \(tried to use disabled|Disconnected \(auth failed).*rip=(?P<host>\S*),.* bst regards.

I'm trying to setup and test fail2ban with dovecot I've installed fail2ban, I've copied config from https://wiki2.dovecot.org/HowTo/Fail2Ban, and, trying to test it, attempted multiple mail access with wrong password, but, get this: # fail2ban-client status dovecot-pop3imap Status for the jail: dovecot-pop3imap |- Filter | |- Currently failed: 0 | |- Total failed: 0 | `- File

Hello, fail2ban does not ban offending IP. NOTICE[29784] chan_sip.c: Registration from '"user3"<sip:1005 at asterisk-ip:5060>' failed for 'offending-IP:53417' - Wrong password NOTICE[29784] chan_sip.c: Registration from '"user3"<sip:1005 at asterisk-ip:5060>' failed for ?offending-IP:53911' - Wrong password systemctl status

Hello I'm using the Fail2ban. I configuration below. I want to try to prevent the continuous password. Fail2ban password that does not prevent this form. (Asterisk 1.8 / Elastix interface) What could be the problem ? Asterisk log; "Registration from '<sip:3060 at sip.x.eu;transport=UDP>' failed for 'x.x.x.x:32956' - Wrong password" Fail2ban asterisk

If this is a small site, I recommend you download the free version of SecAst (www.telium.ca <http://www.telium.ca> ) and replace fail2ban. SecAst does NOT use the log file, or regexes, to match etc.instead it talks to Asterisk through the AMI to extract security information. Messing with regexes is a losing battle, and the lag in reading logs can allow an attacker 100+ registration

Hello, Dovecot is logging authentication failures this way: ------ Jul 12 18:07:19 vps0 dovecot: imap-login: Disconnected (auth failed, 22 attempts in 172 secs): user=<info>, method=PLAIN, rip=82.95.148.152, lip=1.2.3.4, TLS, session=<QylMqlLhVwBSX5SY> ------ Fail2ban is trying to catch them with this regex: ------ failregex = .*(?:pop3-login|imap-login):.*(?:Authentication

Hello list I'm trying to setup fail2ban specially sasl action but I'm facing problems. I have centos-release-5-9.el5.centos.1 and fail2ban-0.8.7.1-1.el5.rf installed with selinux disabled The errors I get are: INFO Creating new jail 'sasl-iptables' fail2ban.comm : WARNING Invalid command: ['add', 'sasl-iptables', 'polling'] I tried gemin against

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I've used denyhosts. If you do have an issue with fail2ban, it does pretty much the same thing. Andy - -------- Original Message -------- Subject: Re: [CentOS] fail2ban needs shorewall? Date: Wed, 23 Jul 2008 17:08:07 +0200 From: Kai Schaetzl <maillists at conactive.com> Reply-To: CentOS mailing list <centos at centos.org> To:

I solved the problem. "action.d/iptables-custom.conf" include only udp. service fail2ban restart Thank you. On Sun, Sep 13, 2015 at 9:17 PM, Andres <andres at telesip.net> wrote: > On 9/13/15 11:16 AM, Gokan Atmaca wrote: >> >> Hello >> >> I'm using the Fail2ban. I configuration below. I want to try to >> prevent the continuous password.

Hi list , someone on the list has seen this type of connection attempts in asterisk, fail2ban does not stop 2015-01-08 14:59:47] SECURITY[21515] res_security_log.c: SecurityEvent="ChallengeSent",EventTV="1420750787-386840",Severity="Informational",Service="SIP",EventVersion="1",AccountID="sip:100 at

Hi to all, @Olaf Hopp I've this filter enabled for fail2ban, my question is: could my filters overlap or interfere with those suggested by you? this is my filter: Contents of /etc/fail2ban/jail.conf: [postfix] # Ban for 10 minutes if it fails 6 times within 10 minutes enabled = true port = smtp,ssmtp filter = postfix logpath = /var/log/mail.log maxretry = 6 bantime = 600

Hi all, If I may, one more question on this subject: I would like to create a fail2ban filer, that scans for these lines: > Jul 20 11:10:09 auth: Info: ldap(user1,60.166.35.162,<cDFXHbxUQgA8piOi>): invalid credentials (given password: password) > Jul 20 11:10:19 auth: Info: ldap(user2,61.53.66.4,<V+nyHbxU+wA9NUIE>): invalid credentials (given password: password) (as you can

In https://wiki.dovecot.org/HowTo/Fail2Ban, for a current (I know for a fact in 2.2.36) I believe it should be filter = dovecot instead of filter = dovecot-pop3imap [root at mail ~]# ls -l /etc/fail2ban/filter.d/doveco* -rw-r--r-- 1 root root 1875 May 11 2017 /etc/fail2ban/filter.d/dovecot.conf [root at mail ~]#