I use ipset instead of iptables:
ipset -exist create fail2ban-IpPort hash:ip,port timeout 3600
ipset -exist create fail2ban-Ip hash:ip timeout 86400
and my action has a blank value for
actionunban =
You can pass any timeout value you want from the jail and just let the
operating system
keep
refers to whats between the brackets in your jail.local:
[postfix]
#enabled= false
enabled = true
filter = postfix
action = my_ipset_ipport[port=smtp, bantime=86400]
my_ipset_ipport2[port=smtps, bantime=86400]
My approach is to not use the unban but use an ipset with a timeout value. This
let's the kernel/ipset keep track of when to unban.
#- my_ipset_ipport:
[INCLUDES]
before = iptables-blocktype.conf
[Definition]
actioncheck =
actionstart =
actionstop =
actionban = ipset -exist
Yes, it looks like the 'milter-reject' would work except you may have a problem
with the 'unknown[unknown]' message since there is no IP address.
What have you tried?
Bill
On 12/3/2015 11:55 AM, Dudi Goldenberg wrote:
> No one?
>
> *From:* Dudi Goldenberg [mailto:d...@kolcore.com]
> *Sent:*
I don't see any errors in your configuration. Could it be you don't
have 20 hits within one hour for the same IP address?
Bill
On 12/12/2015 10:48 PM, Brad wrote:
> I have installed Fail2ban on Centos 6.7 and configured it to handled failed
> login attempts to dovecot. I tried to configure it
reason I tried Fail2ban...
>
>
> -Original Message-----
> From: Bill Shirley [mailto:bshir...@openmri-scottsboro.com]
> Sent: Saturday, December 12, 2015 8:37 PM
> To: fail2ban-users@lists.sourceforge.net
> Subject: Re: [Fail2ban-users] Fail2ban not executing action
>
&g
Have you tried dovecot.conf?
[1:root@elmo fail2ban 1]$ rpm -qa | grep fail
fail2ban-server-0.9.3-1.fc22.noarch
fail2ban-systemd-0.9.3-1.fc22.noarch
[0:root@elmo filter.d]$ ls /etc/fail2ban/filter.d/
3proxy.confcommon.conf guacamole.conf
perdition.conf
Anyone got an idea of how to use the variable 'apacheUser' or 'dport' in this
filter?
apache-common.local:
_apache_access_client =
(?P.+)\s+(?P\S+)\[\]\s+(?P\d+)\s+(?P.+)\s+\[[^]]+\]
Seems like it should be accessible in either jail.local or some action (or
both).
I've searched the internet
sqlite behavior, but then where is the reference to dbfile
forcing all the bans into /var/lib/fail2ban/fail2ban.sqlite3 it is not
in my fail2ban.conf! If its use is default behaviour how do I disable
it?
On Thu, 2016-02-11 at 12:19 -0500, Bill Shirley wrote:
Try using an empty actionunban in your
You didn't provide your jail so I'm just guessing:
You should use one of the iptables actions instead of firewallcmd.
For my Shorewall setup, I define my ipsets in /etc/shorewall/init:
ipset -exist create fail2ban-IpPort hash:ip,port timeout 3600
ipset -exist create fail2ban-Ip hash:ip timeout
' an IP is banned or not. Where is the database? When is it
>> written/read? In what version of fail2ban did sqlite get
>> implemented. At present my /var/lib/fail2ban/fail2ban.sqlite3 has
>> 7.9MB of entries.
>>
>> I ask again how do I turn sqlite activity off? Just point me
Or easier for #2:
1:root@elmo dns]$ cat /etc/redhat-release
Fedora release 22 (Twenty Two)
[1:root@elmo dns]$ ls /var/lib/fail2ban/
fail2ban.sqlite3
Rename that puppy.
Bill
On 2/12/2016 6:15 PM, Bill Shirley wrote:
> In response to Charles:
> For #2, after you empty actionunban, write a
Try using an empty actionunban in your action and set the bantime = 60 in your
jail. This way fail2ban thinks it's unbanning
after a minute. fail2ban shutdown should be quick.
Bill
On 2/11/2016 5:15 AM, Charles Bradshaw wrote:
> Hello list,
>
> I am running fail2ban.noarch 0.9.3-1.el6.1 as
As far as I know, fail2ban never "reloads" the firewall rules. fail2ban just
manages its chains. Perhaps there's something
in the "load-balancer" doing this.
You should list your action rules and jail.
-> I have a startup script, that sets the Firewall NAT rules on every startup
of the
It doesn't really matter what the default timeout is if you send the value from
the jail:
actionban = ipset -exist add fail2ban- timeout
[Init]
name = Ip
my_timeout = 3600
jail:
[sshd]
action = my_ipset_ip[my_timeout=86400]
[sshd-2]
action = my_ipset_ip[my_timeout=12345]
Yes, however you must include the 'actionban':
[Definition]
.
.
actionban = ipset -exist add fail2ban- timeout
[Init]
name = Ip
my_timeout = 3600
Bill
On 4/9/2016 12:48 PM, jaso...@mail-central.com wrote:
On Sat, Apr 9, 2016, at 09:41 AM, Bill Shirley wrote:
It doesn't really matter
en ended without allowing it to
destroy the set.
Regards,
Nick
On 09/04/2016 18:07, Bill Shirley wrote:
Yes, however you must include the 'actionban':
[Definition]
.
.
actionban = ipset -exist add fail2ban- timeout
[Init]
name = Ip
my_timeout = 3600
Bill
On 4/9/2016 12:48 PM, jaso...@mail-cen
Post your filter.
Bill
On 4/11/2016 2:45 PM, jaso...@mail-central.com wrote:
>
> On Mon, Apr 11, 2016, at 11:29 AM, Bill Shirley wrote:
>> I don't see anything wrong except you're not using your ipset from Shorewall:
>>
>> ipset -L f2b-Ip Name: f2b-Ip Type: hash:ip Re
It could be your ignoreip preventing the ban or not enough hits (maxretry)
within findtime. It also
could be that all those hits are from the same IP address (not likely thought).
Post your jail.
Bill
On 4/10/2016 9:36 PM, jaso...@mail-central.com wrote:
> I'm running f2b
>
> I've tested my
Something clobbered your iptables. This was recently discussed on this list.
Did you reload your iptables/firewall?
Bill
On 4/25/2016 6:39 PM, Mahir Sayar Txaqo wrote:
why do you guys think im getting this error message?
==> ./fail2ban.log <==
2016-04-25 18:35:30,167 fail2ban.actions:
=shellcmd /usr/sbin/ipset -exist add DHCP4-lease $+{ipv4} timeout
$+{leaseTime}
On 5/18/2016 4:46 AM, Marcin Mirosław wrote:
W dniu 17.05.2016 o 16:14, Bill Shirley pisze:
This more of a job for Simple Event Correlator (SEC):
https://simple-evcorr.github.io/
Hi!
I didn't know this tool. It loo
The filters change from release to release. They're trying to stay in sync
with Apache 2.2/2.4 message changes. You
should post your apache-noscript filter.
Bill
On 6/30/2016 7:49 PM, ad...@redtailbooks.com wrote:
Shouldn't the filter apache-noscript.conf be catching these attempts?
[Wed
You have to have somewhere in the filter:
failregex = NOQUEUE: reject: RCPT from \S+\[\]: .*$
lost connection after \S+ from (.*)\[\]
reject: (header|body) .* from (.*)\[\]
timeout after \S+ from \S+\[\].*$
warning: Connection rate limit exceeded:
You should be able to address this with the INPUT chain of iptables. Here is
my smtp entry:
pkts bytes target prot opt in out source destination
0 0ACCEPT tcp -- * * 0.0.0.0/00.0.0.0/0multiport dports 25,465,587 limit: up to 10/min
Looks like you have a bad filter. Odd that those errors say:
#mine is always last in the list
Did you change a filter? Post it.
this seems to happen every time someone tried to connect, before it shows the
warning and then the ban.
Connect how? IMAP, POP3, SMTP?
Bill
On 8/10/2017 2:31
Did they get unbanned? Are they in an ipset instead?
Can't help any without your config files.
Bill
On 7/27/2017 11:42 AM, Vito Botta wrote:
Hi all,
I have configured Fail2Ban on one server and it seems to be banning IPs every now and then (as I can see with the
"fail2ban-client status"
Looks like you haven't opened up sftp(port 115) in Shorewall. Post on the
shorewall-us...@lists.sourceforge.net list. Tom Eastep is very helpful.
If it were fail2ban blocking traffic, you would see it in the log file.
Note if you're not using fail2ban with ipsets actions instead of iptables,
You do realize if you run shorewall commands (restart|stop|clear|etc)
it will wipe out the iptables entries that fail2ban adds? Shorewall
reloads the entire iptables.
You should use an ipset instead. Define the ipsets in
/etc/shorewall/init:
ipset -exist create fail2ban-IPv4-port hash:ip,port
fail2ban picks up everything in /etc/fail2ban/jail.conf and then applies
additional/overrides from /etc/fail2ban/jail.local (and probably
/etc/fail2ban/jail.d/*. I didn't even realize there was a jail.d folder
until I saw your post).
In one of those configs (probably /etc/fail2ban/jail.conf)
logname= uid=0 euid=0 tty=ssh ruser=
rhost=193.201.224.212
'sshdext' is a second sshd running on 2112. Entry made in /etc/services for
it, as well as a matching file in filter.d.
The regex seems to be doing its job, as iptables entries are there.
On Sat, Sep 9, 2017 at 7:30 PM
Does it fail when you give it the full path to the .conf file?
fail2ban-regex /var/log/maillog /etc/fail2ban/filter.d/my_dovecot_secure.conf
Bill
On 10/6/2017 6:02 AM, Etienne MONIER wrote:
Hi everyone !
I've got a problem with fail2ban.
I've installed owncloud on a raspberry pi and I want
A host can have multiple addresses; multiple PTRs can point to a host. You
should use 'iptables -nvL' and compare banned IP addresses instead of
hostnames.
Bill
On 9/9/2017 6:56 AM, Doug Eckert wrote:
the name & port have been added to /etc/services. I also copied
filter.d/ssh.conf to
<http://badips.com> and blocklist.de
<http://blocklist.de> at same time"), unless I'm missing an email somewhere.
Tony Collins
On 18 October 2017 at 19:09, Bill Shirley <bshir...@openmri-scottsboro.com
<mailto:bshir...@openmri-scottsboro.com>> wrote:
Do not hijac
Post your jail config section for [recidive] and your 'iptables-allports'
action.
Is XX.XX.XX.XX in
2017-11-16 07:59:07,449 fail2ban.actions [641]: NOTICE [recidive] Ban
XX.XX.XX.XX
an obfuscated public IP address?
Why are your log file entries out of order?
Bill
On 11/26/2017 8:54
om XX.XX.XX.XX port 43794 ssh2', 'ip': 'XX.XX.XX.XX'}': Error stopping action
2017-11-27 0:37 GMT+09:00 Bill Shirley <bshir...@openmri-scottsboro.com
<mailto:bshir...@openmri-scottsboro.com>>:
Post your jail config section for [recidive] and your 'iptables-allports'
action.
Don't forget the 'vacuum' command:
-rw---. 1 root root 164M Dec 15 06:56 fail2ban.sqlite3
sqlite3 /var/lib/fail2ban/fail2ban.sqlite3
sqlite> delete from bans where timeofban <= strftime('%s', '2016-07-25');
sqlite> vacuum;
sqlite> .quit
-rw---. 1 root root 76M Dec 15 07:02
7 7:08 AM, Bill Shirley wrote:
Don't forget the 'vacuum' command:
-rw---. 1 root root 164M Dec 15 06:56 fail2ban.sqlite3
sqlite3 /var/lib/fail2ban/fail2ban.sqlite3
sqlite> delete from bans where timeofban <= strftime('%s', '2016-07-25');
sqlite> vacuum;
sqlite> .quit
-rw---. 1
I have my on method of interfacing fail2ban and Shorewall; it uses ipsets:
Ban by IP address - /etc/fail2ban/action.d/my_ipset_ip.conf:
[INCLUDES]
before = iptables-blocktype.conf
[Definition]
actioncheck =
actionstart =
actionstop =
actionban = ipset -exist add fail2ban- timeout
actionunban
That particular failure does not generate a log line.
BTW: There is a fail2ban-users mailling list.
Bill
On 5/30/2018 11:46 AM, Alberto José García Fumero wrote:
Hi all.
I'm new to fail2ban, and I need advice.
Here I have Postfix+SASL in Linux, users under /home. Quite vanilla.
Postfix uses
Sorry, I thought I was looking at the Fedora list I've subscribed to.
Bill
On 5/30/2018 10:11 PM, Bill Shirley wrote:
BTW: There is a fail2ban-users mailling list.
--
Check out the vibrant tech community on one
I use my own filter for dovecot - jail.local:
[dovecot]
enabled = false
# --
[dovecot-secure]
#enabled = false
enabled = true
filter = my_dovecot_secure
...
my_dovecot_secure.conf:
Mitchell,
I don't think anyone here meant to grind on and on about thread hi-jacking.
You seemed
to not understand doing a reply and replacing the body and subject doesn't
create a
new thread. Now you do; mission accomplished.
On to your original post, what is it that you want to send to
Looks like your regex is wrong. Do you get any hits when you run:
fail2ban-regex /var/log/maillog /etc/fail2ban/filter.d/blockip-custom.conf
I think your regex should be:
failregex = \[\]:\s+535 Incorrect authentication data
Bill
On 1/17/2018 9:46 AM, Emanuel Gonzalez wrote:
Yes, the file
See what data patterns fail2ban is using. Run fail2ban-regex
(change for your log file and filter) with the -v switch:
fail2ban-regex -v /var/log/httpd/access_log
/etc/fail2ban/filter.d/my_apache_access.conf
I have a server using version0.9.3 which gives:
Date template hits:
|- [# of hits]
You should post your jail and filter. fail2ban's filters change from release
to release
to accommodate changes in the underlying log file (i.e. apache 2.2 vs apache
2.4).
Bill
On 2/5/2018 9:55 AM, Palvelin Postmaster via Fail2ban-users wrote:
Hi,
Full disclosure. I’m new to F2B. :)
I
You have a problem with your firewallcmd-ipset action which you didn't post.
Bill
On 2/14/2018 8:38 PM, M.P. wrote:
can someone explain to me where the error is in this configuration? Here's the error message I get when manually trying to
ban using the jail, "manban" - I think I may need a
Sorry, that's where the filters are. Try /etc/fail2ban/action.d/
Bill
On 2/19/2018 9:17 PM, Bill Shirley wrote:
It should be in /etc/fail2ban/filter.d/
Do you know which firewall you are using?
Bill
On 2/18/2018 1:44 PM, M.P. wrote:
Note that my failregex shouldn't matter because I'm
You have the digit 1 after your chain name (fail2ban-Exim) which shouldn't be
there.
Post your jail, filter, and action.
Bill
On 2/16/2018 9:24 AM, Emanuel Gonzalez wrote:
Hello,
In fail2ban logs i see this error:
2018-02-16 11:15:28,629 fail2ban.actions.action: ERROR /sbin/iptables -I
It should be in /etc/fail2ban/filter.d/
Do you know which firewall you are using?
Bill
On 2/18/2018 1:44 PM, M.P. wrote:
Note that my failregex shouldn't matter because I'm not actually looking to have it triggered automatically. I call this jail
manually from the command line. The
Again, post your firewallcmd-ipset action. There's something wrong with it or
with the way your [manban] jail is defaulting to it.
Is /var/log/manban.log an apache error log file? logpath is the name of the
file
fail2ban is to monitor, not the place for fail2ban log its actions.
Also, your
method to reset the log file and database (complete reset)
sudo service fail2ban stopsudo truncate -s 0/var/log/fail2ban.log sudo rm /var/lib/fail2ban/fail2ban.sqlite3sudo service
fail2ban restart
On 2018/03/06 02:32:42, Bill Shirley <bshir...@openmri-scottsboro.com> wrote:
From the nightly
In your sample log lines, you have two dashes after the IP address; your regex
only expects one. Try:
failregex = ^.+?"(GET|POST|HEAD) /.+?" 404 .+$
BTW, you don't escape / or -
Bill
On 3/13/2018 2:12 PM, Sophie Loewenthal wrote:
NGINX BOTCHECK
Debian 9.2
$ dpkg -l fail2ban
Here's what I use for Dovecot:
failregex = auth:.+dovecot:auth.+authentication\s+failure;.+rhost=
dovecot:.+rip=.+wrong version number
dovecot:.+tried to use disallowed plaintext auth.+rip=
dovecot:.+auth failed.+rip=
dovecot:.+no auth attemps.+rip=
From the nightly log rotation /etc/logrotate.d/fail2ban
/var/log/fail2ban.log {
missingok
notifempty
postrotate
/usr/bin/fail2ban-client flushlogs >/dev/null || true
endscript
}
I think you would run:
fail2ban-client flushlogs
Bill
On 3/5/2018 2:49 PM, Rose, John B wrote:
What action are you using for the jail? Shorewall start/restart loads the
entire iptables
which will clobber fail2ban's entries.
I use an action that stores the offending IP address in an ipset so that the
shorewall restart
command doesn't wipe it.
[0:root@bb8 fail2ban]$ rpm -q
I use an ipset with Shorewall to ban IP addresses. My setup uses the 'timeout'
option
of ipset. Also, there is no unban/ban overhead upon restarting fail2ban.
/etc/shorewall/init (note 'timeout' is the default in seconds):
ipset -exist create fail2ban-IPv4-ip hash:ip timeout 86400
the United States.
Bill
On 5/28/2019 3:52 AM, Steven Barthen via Fail2ban-users wrote:
Hello Bill
I changed and tested your solution and it works very well!
Thanks a lot for that, it solved all my issues!
Cheers
Am Di., 28. Mai 2019 um 01:37 Uhr schrieb Bill Shirley mailto:bshir...@openmri
e block to my web server when I'm
updating my certificate.)
___
Fail2ban-users mailing list
Fail2ban-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/fail2ban-users
--- Begin Message ---
Bill Shirley has contributed a PHP
[0:root@yoda fail2ban]$ rpm -qa | grep -e http -e fail2ban | sort
fail2ban-0.8.10-1.fc17.noarch
httpd-2.2.23-1.fc17.x86_64
httpd-tools-2.2.23-1.fc17.x86_64
My apache-noscript:
[INCLUDES]
before = apache-common.conf
[Definition]
# fail2ban-regex /var/log/httpd/error_log
I use an ipset so I'm not authoritative on this, but I think the chains are only
created when you get an actual ban.
Have you tried using fail2ban-regex? I'm not familiar where the SSH log file
is on Ubuntu. Here's an example for the Apache error log on Fedora:
fail2ban-regex
Some attacks open up tens, if not hundreds, of connections at one time. I
think fail2ban
works by blocking *new* connections and since these connections are already
initiated
they don't get banned.
You could limit the number of simultaneous connections with iptables.
Something like:
ACCEPT
conntrack tracks UDP. Try running:
conntrack -L | grep udp
Bill
On 6/28/2019 9:04 AM, BASSAGET Cédric wrote:
Hello Bill,
would that apply to UDP traffic ? I think it does not as UDP is stateless
Regards
Le ven. 28 juin 2019 à 14:43, Bill Shirley mailto:bshir...@openmri-scottsboro.com
Yes, you can write a filter, action, and jail to accomplish this.
It's strange that you would want to ban on *source* port. Source ports are
usually
random and if an IP is banned, they could just switch their source port. Are
you
sure you don't mean destination port? Like ban an IP accessing
If you have thousands of blocked IP address, fail2ban's ipset action is
desirable.
Some attacks initiate tens of connections at the same time so that although
fail2ban
bans the address, your system has to handle all of them because they have
already
connected. You can mitigate this by
in 0.18 sec]
Missed line(s): too many to print. Use --print-all-missed to print all 669
lines
Ativado Seg, 17 fev 2020 16:35:54 -0300 Bill Shirley
escreveu
> Your failregex isn't even close to matching the log lines in
/var/log/messages:
>
>
block!
I always restart fail2ban with every change to the configuration files.
systemctl restart fail2ban
Ativado Seg, 17 fev 2020 17:29:48 -0300 Bill Shirley
escreveu
> Lines: 742 lines, 0 ignored, 73 matched, 669 missed73 lines
matched. It is working. Don't for
Your failregex isn't even close to matching the log lines in /var/log/messages:
failregex = Submitting address \[\] to the firewall
Feb 17 14:18:42 www drupal[3979]:
I think the 'auth=0/1' is the number of successful logins vs login attempts.
You should be
able to key off of this with your failregex.
Bill
On 1/1/2020 4:16 AM, siefke_lis...@web.de wrote:
Hello,
I have question about catching submission (postfix) connects from ip's
which tried it more
Squirrelmail, Roundcube, et. al. login locally (::1 or 127.0.0.1). Don't think
you want to ban
those addresses. Search the Apache access log for the login failure screen and
key off
of that.
Bill
On 12/29/2019 11:12 AM, Tom Hendrikx wrote:
Hi,
Your fail regex does not extract an IP
At the bottom of /etc/fail2ban/action.d/iptables-ipset-proto6.conf:
[Init]
# Option: default-timeout
# Notes: specifies default timeout in seconds (handled default ipset timeout
only)
# Values: [ NUM ] Default: 600
default-timeout = 600
ipmset = f2b-
familyopt =
[Init?family=inet6]
Header: family inet hashsize 1024 maxelem 65536 timeout 600
Timeout here is the *default* timeout. Look at the actual entry. It should be
counting down
between the two ipset commands.
ipset -L | grep -e Name -e 8.8.8.8
Where 8.8.8.8 is the actual IP address.
Bill
On 5/26/2020 9:52 AM, Nick
se the override. I can override it in iptables-ipset-proto6-allports.local, but this is an override for all jails using
this action.
Do you know how to achieve this?
Thanks,
Nick
On 27/05/2020 14:11, Bill Shirley wrote:
Header: family inet hashsize 1024 maxelem 65536 timeout 600
Timeout here
Did you mean to set the timeout on f2b-postfix-sasl to ten minutes (600)? These
will count down and fall off the list without fail2ban knowing. You should see
the
countdown with:
watch ipset -L f2b-postfix-sasl
Bill
On 7/27/2020 9:06 PM, registrati...@itconqueror.com wrote:
Hello List,
73 matches
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