Home
Knowledge Base
v2
Applications
Fail2ban
What is Fail2Ban?

What is Fail2Ban?

Last modified: May 4, 2020

Fail2ban scans log files (e.g. /var/log/apache/error_log) and bans IPs that show the malicious signs — too many password failures, seeking for exploits, etc. Generally Fail2Ban is then used to update firewall rules to reject the IP addresses for a specified amount of time, although any arbitrary other action (e.g. sending an email) could also be configured. Out of the box Fail2Ban comes with filters for various services (apache, courier, ssh, etc).

Fail2Ban is able to reduce the rate of incorrect authentications attempts however it cannot eliminate the risk that weak authentication presents. Configure services to use only two factor or public/private authentication mechanisms if you really want to protect services

BASIC

Command		Description
start		starts the server and the jails
reload		reloads the configuration
reload <JAIL>		reloads the jail <JAIL>
stop		stops all jails and terminate the server
status		gets the current status of the server
ping		tests if the server is alive
help		return this output

Example – Show banned IP addresses

sudo fail2ban-client status

sudo fail2ban-client status

More cmd´s can be found here – https://www.fail2ban.org/wiki/index.php/Commands

Related Articles

Need Support?

Can’t find the answer you’re looking for? Don’t worry we’re here to help!

Contact Support

The following terms and conditions govern all use of the QuickBox.io website and all content, services and products available at or through the website, including, but not limited to, QuickBox.io Forum Software and the QuickBox.io Support Forums, (taken together, the Website). The Website is owned and operated by (“QuickBox.IO”). The Website is offered subject to your acceptance without modification of all of the terms and conditions contained herein and all other operating rules, policies (including, without limitation, QuickBox.io’s Privacy Policy and Community Guidelines) and procedures that may be published from time to time on this Site by QuickBox (collectively, the “Agreement”). Please read this Agreement carefully before accessing or using the Website. By accessing or using any part of the web site, you agree to become bound by the terms and conditions of this agreement. If you do not agree to all the terms and conditions of this agreement, then you may not access the Website or use any services. If these terms and conditions are considered an offer by QuickBox, acceptance is expressly limited to these terms. The Website is available only to individuals who are at least 13 years old.

Your QuickBox.io Account

If you create an account on the Website, you are responsible for maintaining the security of your account and you are fully responsible for all activities that occur under the account. You must immediately notify QuickBox of any unauthorized uses of your account or any other breaches of security. QuickBox will not be liable for any acts or omissions by you, including any damages of any kind incurred as a result of such acts or omissions.

Responsibility of Contributors

If you post material to the Website, post links on the Website, or otherwise make (or allow any third party to make) material available by means of the Website (any such material, “Content”), You are entirely responsible for the content of, and any harm resulting from, that Content. That is the case regardless of whether the Content in question constitutes text, graphics, an audio file, or computer software. By making Content available, you represent and warrant that:

the downloading, copying and use of the Content will not infringe the proprietary rights, including but not limited to the copyright, patent, trademark or trade secret rights, of any third party;
if your employer has rights to intellectual property you create, you have either (i) received permission from your employer to post or make available the Content, including but not limited to any software, or (ii) secured from your employer a waiver as to all rights in or to the Content;
you have fully complied with any third-party licenses relating to the Content, and have done all things necessary to successfully pass through to end users any required terms;
the Content does not contain or install any viruses, worms, malware, Trojan horses or other harmful or destructive content;
the Content is not spam, is not machine- or randomly-generated, and does not contain unethical or unwanted commercial content designed to drive traffic to third party sites or boost the search engine rankings of third party sites, or to further unlawful acts (such as phishing) or mislead recipients as to the source of the material (such as spoofing);
the Content is not pornographic, does not contain threats or incite violence, and does not violate the privacy or publicity rights of any third party;
your content is not getting advertised via unwanted electronic messages such as spam links on newsgroups, email lists, blogs and web sites, and similar unsolicited promotional methods;
your content is not named in a manner that misleads your readers into thinking that you are another person or company; and
you have, in the case of Content that includes computer code, accurately categorized and/or described the type, nature, uses and effects of the materials, whether requested to do so by QuickBox or otherwise.

User Content License

User contributions are licensed under a GNU General Public License. Without limiting any of those representations or warranties, QuickBox has the right (though not the obligation) to, in QuickBox’s sole discretion (i) refuse or remove any content that, in QuickBox’s reasonable opinion, violates any QuickBox policy or is in any way harmful or objectionable, or (ii) terminate or deny access to and use of the Website to any individual or entity for any reason, in QuickBox’s sole discretion. QuickBox will have no obligation to provide a refund of any amounts previously paid.

Payment and Renewal

General Terms

Optional paid services or upgrades may be available on the Website. When utilizing an optional paid service or upgrade, you agree to pay QuickBox the one-time, monthly or annual subscription fees indicated. Payments will be charged on a pre-pay basis on the day you purchase the service or upgrade and will cover the use of that service or upgrade for a monthly or annual subscription period as indicated. These fees are not refundable. The one exception is QuickBox Pro, which provides a 3 Day money back policy, after 3 days, fees are not refundable.

Automatic Renewal

Unless you notify QuickBox before the end of the applicable subscription period that you want to cancel a service or upgrade, your subscription will automatically renew and you authorize us to collect the then-applicable annual or monthly subscription fee (as well as any taxes) using any credit card or other payment mechanism we have on record for you. Subscriptions can be canceled at any time. Please be advised that renewal fees are non-refundable. We provide courtesy emails notifying you of any upcoming renewals several days in advance, failure to cancel an unwanted subscription is not the responsibility of QuickBox.IO.

Refunds

We provide a 3-day “no questions asked” refund for new QuickBox Pro subscriptions (meaning, not for QuickBox.IO provided services such as Migration Service, Server Optimization, and our Guru Install Service). Refunds do not apply for upgrades or renewals. Such refund shall be available for a period of three (3) days from the end of the business day the purchase was made (and if such day is not a business day, then the following business day). We may refuse to refund people who acted in bad faith or misused the Services, or otherwise violated any of the policies stated in the Terms of Service.

Services

Hosting, Support Services

Optional Hosting and Support services may be provided by QuickBox under the terms and conditions for each such service. By signing up for a Hosting/Support or Support services account, you agree to abide by such terms and conditions.

Responsibility of Website Visitors

QuickBox has not reviewed, and cannot review, all of the material, including computer software, posted to the Website, and cannot therefore be responsible for that material’s content, use or effects. By operating the Website, QuickBox does not represent or imply that it endorses the material there posted, or that it believes such material to be accurate, useful or non-harmful. You are responsible for taking precautions as necessary to protect yourself and your computer systems from viruses, worms, Trojan horses, and other harmful or destructive content. The Website may contain content that is offensive, indecent, or otherwise objectionable, as well as content containing technical inaccuracies, typographical mistakes, and other errors. The Website may also contain material that violates the privacy or publicity rights, or infringes the intellectual property and other proprietary rights, of third parties, or the downloading, copying or use of which is subject to additional terms and conditions, stated or unstated. QuickBox disclaims any responsibility for any harm resulting from the use by visitors of the Website, or from any downloading by those visitors of content there posted.

Content Posted on Other Websites

We have not reviewed, and cannot review, all of the material, including computer software, made available through the websites and web pages to which QuickBox.io links, and that link to QuickBox.io. QuickBox does not have any control over those non-QuickBox.io websites and web pages, and is not responsible for their contents or their use. By linking to a non-QuickBox.io website or web page, QuickBox does not represent or imply that it endorses such website or web page. You are responsible for taking precautions as necessary to protect yourself and your computer systems from viruses, worms, Trojan horses, and other harmful or destructive content. QuickBox disclaims any responsibility for any harm resulting from your use of non-QuickBox.io websites and web pages.

Copyright Infringement and DMCA Policy

As QuickBox asks others to respect its intellectual property rights, it respects the intellectual property rights of others. If you believe that material located on or linked to by QuickBox.io violates your copyright, and if this website resides in the USA, you are encouraged to notify QuickBox in accordance with QuickBox’s Digital Millennium Copyright Act (“DMCA”) Policy. QuickBox will respond to all such notices, including as required or appropriate by removing the infringing material or disabling all links to the infringing material. QuickBox will terminate a visitor’s access to and use of the Website if, under appropriate circumstances, the visitor is determined to be a repeat infringer of the copyrights or other intellectual property rights of QuickBox or others. In the case of such termination, QuickBox will have no obligation to provide a refund of any amounts previously paid to QuickBox.

Intellectual Property

This Agreement does not transfer from QuickBox to you any QuickBox or third party intellectual property, and all right, title and interest in and to such property will remain (as between the parties) solely with QuickBox. QuickBox, QuickBox.io, the QuickBox.io logo, and all other trademarks, service marks, graphics and logos used in connection with QuickBox.io, or the Website are trademarks or registered trademarks of QuickBox or QuickBoxs licensors. Other trademarks, service marks, graphics and logos used in connection with the Website may be the trademarks of other third parties. Your use of the Website grants you no right or license to reproduce or otherwise use any QuickBox or third-party trademarks.

Advertisements

QuickBox reserves the right to display advertisements on your content unless you have purchased a Services account and/or received proper access promotions within the provided Forums.

Attribution

QuickBox reserves the right to display attribution links such as ‘Powered by QuickBox.io,’ theme author, and font attribution in your content footer or toolbar. Footer credits and the QuickBox.io toolbar may not be removed regardless of upgrades purchased.

Changes

QuickBox reserves the right, at its sole discretion, to modify or replace any part of this Agreement. It is your responsibility to check this Agreement periodically for changes. Your continued use of or access to the Website following the posting of any changes to this Agreement constitutes acceptance of those changes. QuickBox may also, in the future, offer new services and/or features through the Website (including, the release of new tools and resources). Such new features and/or services shall be subject to the terms and conditions of this Agreement.

Termination

QuickBox may terminate your access to all or any part of the Website at any time, with or without cause, with or without notice, effective immediately. If you wish to terminate this Agreement or your QuickBox.io account (if you have one), you may simply discontinue using the Website. All provisions of this Agreement which by their nature should survive termination shall survive termination, including, without limitation, ownership provisions, warranty disclaimers, indemnity and limitations of liability.

Disclaimer of Warranties

The Website is provided “as is”. QuickBox and its suppliers and licensors hereby disclaim all warranties of any kind, express or implied, including, without limitation, the warranties of merchantability, fitness for a particular purpose and non-infringement. Neither QuickBox nor its suppliers and licensors, makes any warranty that the Website will be error free or that access thereto will be continuous or uninterrupted. If you’re actually reading this, here’s a treat. You understand that you download from, or otherwise obtain content or services through, the Website at your own discretion and risk.

Disclaimer of Software

This script is intended for general use and no warranty is implied for suitability to any given task. QuickBox.IO will hold no responsibility for your setup or any damage done while using/installing/modifying this script or any of its plugins. Please keep in mind QuickBox.IO nor it’s staff are responsible for keeping your Software and/or Server up-to-date; this is a responsibility solely left to the user of the QuickBox Pro software.

QuickBox.IO and it’s associated staff reserve the right to terminate support at any time on the grounds that third-party applications; not yet approved, tested, or otherwise are found to be a result in QuickBox Pro malfunctioning.

Licensed under BSD 3-Clause

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Limitation of Liability

In no event will QuickBox, or its suppliers or licensors, be liable with respect to any subject matter of this agreement under any contract, negligence, strict liability or other legal or equitable theory for: (i) any special, incidental or consequential damages; (ii) the cost of procurement for substitute products or services; (iii) for interruption of use or loss or corruption of data; or (iv) for any amounts that exceed the fees paid by you to QuickBox under this agreement during the twelve (12) month period prior to the cause of action. QuickBox shall have no liability for any failure or delay due to matters beyond their reasonable control. The foregoing shall not apply to the extent prohibited by applicable law.

General Representation and Warranty

You represent and warrant that (i) your use of the Website will be in strict accordance with the QuickBox Privacy Policy, Community Guidelines, with this Agreement and with all applicable laws and regulations (including without limitation any local laws or regulations in your country, state, city, or other governmental area, regarding online conduct and acceptable content, and including all applicable laws regarding the transmission of technical data exported from the country in which this website resides or the country in which you reside) and (ii) your use of the Website will not infringe or misappropriate the intellectual property rights of any third party.

Indemnification

You agree to indemnify and hold harmless QuickBox, its contractors, and its licensors, and their respective directors, officers, employees and agents from and against any and all claims and expenses, including attorneys’ fees, arising out of your use of the Website, including but not limited to your violation of this Agreement.

Miscellaneous

This Agreement constitutes the entire agreement between QuickBox and you concerning the subject matter hereof, and they may only be modified by a written amendment signed by an authorized executive of QuickBox, or by the posting by QuickBox of a revised version. Except to the extent applicable law, if any, provides otherwise, this Agreement, any access to or use of the Website will be governed by the laws of the state of California, U.S.A., excluding its conflict of law provisions, and the proper venue for any disputes arising out of or relating to any of the same will be the state and federal courts located in San Francisco County, California. Except for claims for injunctive or equitable relief or claims regarding intellectual property rights (which may be brought in any competent court without the posting of a bond), any dispute arising under this Agreement shall be finally settled in accordance with the Comprehensive Arbitration Rules of the Judicial Arbitration and Mediation Service, Inc. (“JAMS”) by three arbitrators appointed in accordance with such Rules. The arbitration shall take place in San Francisco, California, in the English language and the arbitral decision may be enforced in any court. The prevailing party in any action or proceeding to enforce this Agreement shall be entitled to costs and attorneys’ fees. If any part of this Agreement is held invalid or unenforceable, that part will be construed to reflect the parties’ original intent, and the remaining portions will remain in full force and effect. A waiver by either party of any term or condition of this Agreement or any breach thereof, in any one instance, will not waive such term or condition or any subsequent breach thereof. You may assign your rights under this Agreement to any party that consents to, and agrees to be bound by, its terms and conditions; QuickBox may assign its rights under this Agreement without condition. This Agreement will be binding upon and will inure to the benefit of the parties, their successors and permitted assigns.

This document was last updated January 18, 2020.