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The rsyslog message drop filter feature allows you to delete unwanted messages by hostname and tag. This filtering capability is always enabled and can be easily configured by updating a simple JSON file.

To modify the drop rules, follow these steps:

1. Log in to the instance where the rsyslog application is installed.
2. Navigate to the configuration folder located at /opt/rsyslog/config.
3. Use your preferred text editor (such as nano) to open the file named “drop_by_host_tag.lt”. Note: You will need root permissions to edit this file (for example, you can use the command “sudo nano drop_by_host_tag.lt“).
4. Make the necessary changes to the file based on your filtering requirements.

The sample file looks as follows:

{ "version" : 1,
  "nomatch" : "0",
  "type" : "string",
  "table" : [
    {"index" : "localhost dropme", "value" : "1" },
    {"index" : "localhost drop-me", "value" : "1" }
  ]
}

The parts in italics are the actual filters and the parts in bold are the data filtered against.

When configuring filters for the “message drop filter” class in rsyslog, it’s important to understand that each filter consists of two parts: the hostname and the tag.

The first part specifies the hostname to filter for (for example, “localhost”). It’s crucial to note that there should be exactly one space character separating the hostname and the tag. If no space character is given or more than one space is given, the filter will not match any messages.

The second part specifies the message’s syslog tag (for example, “dropme”). It’s essential to keep in mind that neither the hostname nor the tag can contain spaces or any other whitespace characters. This is because such characters are not permitted in hostnames and tags by the relevant RFC, and as such, they will never occur.

If spaces are included, the filter will not match any messages, rendering it ineffective. To ensure that your “message drop filter” class filters work properly, make sure to avoid using spaces or any other whitespace characters in your hostname or tag.

It’s important to note that neither the hostname nor tag can contain any spaces or other whitespace characters. This is because such chaspaces or any other whitespace characters in your hostname or tag.

When done editing the file, ensure that each “index” line except the last one ends with a comma. After saving, you can also do a check of the overall configuration by running “rsyslogd -N1” on the command line. Please note that rsyslogd must be sent a HUP to activate the changes.

In later stages of the beta build process, we will at least partly automate the post-edit check and activation procedures.

Back to aws rsyslog overview.

RSyslog Windows Agent
Version 8.1 Final Release
End User License Agreement
2025-07-14

This binary code license (“License”) contains rights and restrictions associated with use of the accompanying software and documentation (“Software”). Read the License carefully before installing the Software. By installing the Software you agree to the terms and conditions of this License.

1. Limited License Grant.
Adiscon grants you a non-exclusive License to use the software free of charge for 30 days for the purpose of evaluating whether to purchase a commercial license of RSyslog Windows Agent. After this period, users are required to purchase proper licenses if you continue to use it. If Customer has purchased RSyslog Windows Agent licenses, Customer is permitted to use the purchased product edition under the terms of this license agreement.

2. Copyright
The software is confidential copyrighted information of Adiscon GmbH, Germany. You shall not modify, decompile, disassemble, decrypt, extract, or otherwise reverse engineer the software. The software may not be leased, assigned, or sublicensed, in whole or in part. A separate license is required for each computer being monitored by the RSyslog Windows Agent.

3. Trademarks and logos
RSyslog Windows Agent is a trademark of Adiscon. Windows is a registered trademark of Microsoft Corporation. All other trademarks and service marks are the property of their respective owners.

4. Licensed syslog
A RSyslog Windows Agent license covers the installation of one system. RSyslog Windows Agent comes in several editions, only the Enterprise Version is permitting the Syslog Listener Service. The RSyslog Windows Agent Enterprise Edition permits you to receive messages from an unlimited number of devices. Please note that instances of Adiscon’s EventReporter and/or RSyslog Windows Agent do NOT count against the remote device count. So you may use a RSyslog Windows Agent Server Professional edition to receive data from 500 servers with Adiscon EventReporter installed on them.

5. Licensed remote file monitor Clients
RSyslog Windows Agent can be used to monitor text files on remote systems. This remote monitoring requires a proper license. RSyslog Windows Agent comes in several editions, each of them permitting remote file monitoring for a different number of remote systems, You must purchase the edition of RSyslog Windows Agent that reflects the number of different remote systems being monitored by RSyslog Windows Agent. The RSyslog Windows Agent Basic Edition does not permit you to monitor files locally or on remote systems. The RSyslog Windows Agent Professional Edition permits you to monitor files locally and on up to 10 remote systems. The RSyslog Windows Agent Enterprise Edition permits you to monitor files on an unlimited number of remote systems.

Please note that only the number of remote systems counts toward the license. So if you monitor 50 files on a single remote system, this counts as a single license. If you monitor a single file on each one of 50 remote systems, than this counts as 50 licenses.

6. Licensed remote event log monitor clients
RSyslog Windows Agent can be used to monitor Windows event logs on remote computers. A full RSyslog Windows Agent license is required for each remote computer on which Windows event logs are being monitored. Technically, the product might count licenses based on the number of remote event log monitors configured. In such cases, a license is required for each remote event log monitor configured.

7. Product Editions
A specific edition of the RSyslog Windows Agent product is licensed. Only the specifically licensed version may be used. For example, if a RSyslog Windows Agent Basic Edition is licensed, features of the Professional edition may not be used. The license keys are also technically different, that is a Basic edition license key is technically different from a Professional Edition license key. Thus, a Basic edition license key can not be used to unlock Professional features.

8. Evaluation period
The product comes with a free 30 day evaluation period. We strongly encourage all customers to evaluate the product’s fitness for their systems and environment during the evaluation period. Customer agrees to install the product on production systems only after it has proven to be acceptable on similar test systems.

9. Redistribution
Everybody is granted permission to redistribute the install set if the following criteria are meet:

– the install set, product and all documentation (including this license) are
supplied unaltered
– there is no registration key distributed along with the install set. REGISTRATION
KEYS ARE SOLE INTENDED FOR THE ORIGINAL CUSTOMER. IT IS COPYRIGHT
FRAUD TO DISTRIBUTE REGISTRATIONS KEYS.
– the redistributor is only allowed to charge a nominal fee if the product is included
into a commercial distribution set (e.g. shareware CD collection). For a CD collection,
we deem a fee of up to US$ 30 to be reasonable.
– redistribution as part of a book companion CD is OK, as long as the books purpose is
not only to cover a CD software collection in which case we deem a cost of US$ 50
for the book to be OK.

10. Disclaimer of warranty
The Software is provided “AS IS,” without a warranty of any kind. ALL EXPRESS OR IMPLIED REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED.

11. Limitation of liability
ADISCON SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY YOU OR ANY THIRD PARTY AS A RESULT OF USING OR DISTRIBUTING SOFTWARE. IN NO EVENT WILL ADISCON BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE SOFTWARE, EVEN IF ADISCON HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IT IS THE CUSTOMERS RESPONSIBILITY, TO USE THE EVALUATION PERIOD TO MAKE SURE THE PRODUCT CAN RUN WITHOUT PROBLEMS IN CUSTOMERS ENVIRONMENT.

12. Severability
The user must assume the entire risk of using the program. IN NO EVENT WILL ADISCON BE LIABLE FOR ANY DAMAGES IN EXCESS OF THE AMOUNT ADISCON RECEIVED FROM YOU FOR A LICENSE TO THE SOFTWARE, EVEN IF ADISCON SHALL HAVE BEEN INFORMED OF THE POSSIBILITY OF SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY.

13. Termination
The License will terminate automatically if you fail to comply with the limitations described herein. On termination, you must destroy all copies of the Software.

14. Product Parts Not Covered by this License
RSyslog Windows Agent may include optional parts which are not covered by this license. For example, a free web-based interface for log access (phpLogCon) may be part of the RSyslog Windows Agent package. Any package not licensed under the term of this license will have prominent note as well as its own license document. If in doubt, the RSyslog Windows Agent service, the RSyslog Windows Agent configuration Program and the Interactive Syslog Server as well as accompanying documentation are licensed under this agreement.

14. High risk activities
The Software is not fault-tolerant and is not designed, manufactured or intended for use or resale as on-line control equipment in hazardous environments requiring fail-safe performance, such as in the operation of nuclear facilities, aircraft navigation or communication systems, air traffic control, direct life support machines, or weapons systems, in which the failure of the Software could lead directly to death, personal injury, or severe physical or environmental damage (“High Risk Activities”). Adiscon specifically disclaims any express or implied warranty of fitness for High Risk Activities.

15. General Provisions
This license agreement shall be governed and interpreted in accordance with the substantive law of Germany applicable to contracts made and performed there. The place of performance of the agreement is Germany, Grossrinderfeld notwithstanding where the Customer is situated or any servers are located.

If any provision of this license agreement shall be held void or unenforceable by a court of competent jurisdiction, it shall be severed from this agreement and shall not affect the remaining provisions. Void clauses are to be construed in such a way that the business purpose of said clauses as envisaged by both parties can be realized in a lawful manner. Except as expressly set forth in this agreement, the exercise by either party of any of its remedies under this agreement will be without prejudice to its other remedies under this agreement or otherwise.

Our website may be used without entering personal information. Different rules may apply to certain services on our site, however, and are explained separately below. We collect personal information from you (e.g. name, address, email address, telephone number, etc.) in accordance with the provisions of German data protection statutes. Information is considered personal if it can be associated exclusively to a specific natural person. The legal framework for data protection may be found in the German Federal Data Protection Act (BDSG) and the Telemedia Act (TMG). The provisions below serve to provide information as to the manner, extent and purpose for collecting, using and processing personal information by the provider.

Cookies

Our website makes use of so-called cookies in order to recognize repeat use of our website by the same user/internet connection subscriber. Cookies are small text files that your internet browser downloads and stores on your computer. They are used to improve our website and services. In most cases these are so-called “session cookies” that are deleted once you leave our website.

To an extent, however, these cookies also pass along information used to automatically recognize you. Recognition occurs through an IP address saved to the cookies. The information thereby obtained is used to improve our services and to expedite your access to the website.

You can prevent cookies from being installed by adjusting the settings on your browser software accordingly. You should be aware, however, that by doing so you may not be able to make full use of all the functions of our website.

Server Data

For technical reasons, data such as the following, which your internet browser transmits to us or to our web space provider (so called server log files), is collected:

– type and version of the browser you use
– operating system
– websites that linked you to our site (referrer URL)
– websites that you visit
– date and time of your visit
– your Internet Protocol (IP) address.

This anonymous data is stored separately from any personal information you may have provided, thereby making it impossible to connect it to any particular person. The data is used for statistical purposes in order to improve our website and services.

Contacting Us

On our website we offer you the opportunity to contact us, either by email and/or by using a contact form. In such event, information provided by the user is stored for the purpose of facilitating communications with the user. No data is transferred to third parties except as mentioned in this policy. Nor is any of this information matched to any information that may be collected by other components of our website.

Posting Comments

On our website we offer you the opportunity to post comments about individual articles. For this purpose, the IP address of the user/internet connection subscriber is stored, as well as the email address used. This information is stored for our security in the event the author through his/her comments infringes against third party rights and/or unlawful content is entered. Consequently, we have a direct interest in the author’s stored data, particularly since we may be potentially liable for such violations. Having some identifying information is also necessary if you wish to have all of your data removed – otherwise we could not find it. No data is transferred to third parties. Nor is any of this information matched to any information that may be collected by other components of our website.

Use of Google Analytics with anonymization

Our website uses Google Analytics, a web analysis service from Google Inc., 1600 Amphitheatre Parkway, Mountain View, CA 94043 USA, hereinafter referred to as “Google“. Google Analytics employs so-called “cookies“, text files that are stored to your computer in order to facilitate an analysis of your use of the site.

The information generated by these cookies, such as time, place and frequency of your visits to our site, including your IP address, is transmitted to Google’s location in the US and stored there.

We use Google Analytics with an IP anonymization feature on our website. In doing so, Google abbreviates and thereby anonymizes your IP address before transferring it from member states of the European Union or signatory states to the Agreement on the European Economic Area.

Google will use this information to evaluate your usage of our site, to compile reports on website activity for us, and to provide other services related to website- and internet usage. Google may also transfer this information to third parties if this is required by law or to the extent this data is processed by third parties on Google´s behalf.

Google states that it will in never associate your IP address with other data held by Google. You can prevent cookies from being installed by adjusting the settings on your browser software accordingly. You should be aware, however, that by doing so you may not be able to make full use of all the functions of our website.

Google also offers a disabling option for the most common browsers, thus providing you with greater control over the data which is collected and processed by Google. If you enable this option, no information regarding your website visit is transmitted to Google Analytics. However, the activation does not prevent the transmission of information to us or to any other web analytics services we may use. For more information about the disabling option provided by Google, and how to enable this option, visit https://tools.google.com/dlpage/gaoptout?hl=en

Use of Google AdSense

Our website employs Google AdSense. Google AdSense is a service of Google Inc., 1600 Amphitheatre Parkway, Mountain View, CA 94043 USA, for incorporating advertisements. Google-AdSense uses so-called “cookies“, text files, that are stored to your computer and which provide analysis of the use of our website. Furthermore, Google AdSense uses so-called “web beacons“. Web beacons allow Google to analyze information, such as visitor traffic to our website. This information, along with your IP address and the ad format displayed, is transmitted to Google in the US where it is stored and may be transferred by Google to contracting partners. However, Google does not merge your IP-address with other stored data on you. You can prevent cookies from being installed by adjusting the settings on your browser software accordingly. You should be aware, however, that by doing so you may not be able to make full use of all the functions of our website. By using our website you declare that you agree to the processing of data collected about you by Google in the manner previously described and for the purposes there specified.

Use of Google reCAPTCHA

Our website uses Google reCAPTCHA to fight SPAM. We would like to avoid doing this, but unfortunately the SPAM problem has become so bad that without reCAPTCHA we would need to turn off commenting (and we actually did so a couple of month in early 2018). We limit the use of reCAPTCHA to pages where it is absolutely needed, e.g. when you enter comments.  As reCAPTCHA is a Google service, it is subject to Google’s Privacy Policy and Terms of Use.

Information/Cancellation/Deletion

On the basis of the Federal Data Protection Act, you may contact us at no cost if you have questions relating to the collection, processing or use of your personal information, if you wish to request the correction, blocking or deletion of the same, or if you wish to cancel explicitly granted consent. Please note that you have the right to have incorrect data corrected or to have personal data deleted, where such claim is not barred by any legal obligation to retain this data.

YouTube

We use YouTube on our website. This is a video portal operated by YouTube LLC, 901 Cherry Ave, 94066 San Bruno, CA, USA, hereinafter referred to as “YouTube”.

YouTube is a subsidiary of Google LLC, 1600 Amphitheatre Parkway, Mountain View, CA 94043 USA, hereinafter referred to as “Google”.

Through certification according to the EU-US Privacy Shield

https://www.privacyshield.gov/participant?id=a2zt000000001L5AAI&status=Active

Google and its subsidiary YouTube guarantee that they will follow the EU’s data protection regulations when processing data in the United States.

We use YouTube in its advanced privacy mode to show you videos. The legal basis is Art. 6 Para. 1 lit. f) GDPR. Our legitimate interest lies in improving the quality of our website. According to YouTube, the advanced privacy mode means that the data specified below will only be transmitted to the YouTube server if you actually start a video.

Without this mode, a connection to the YouTube server in the USA will be established as soon as you access any of our webpages on which a YouTube video is embedded.

This connection is required in order to be able to display the respective video on our website within your browser. YouTube will record and process at a minimum your IP address, the date and time the video was displayed, as well as the website you visited. In addition, a connection to the DoubleClick advertising network of Google is established.

If you are logged in to YouTube when you access our site, YouTube will assign the connection information to your YouTube account. To prevent this, you must either log out of YouTube before visiting our site or make the appropriate settings in your YouTube account.

For the purpose of functionality and analysis of usage behavior, YouTube permanently stores cookies on your device via your browser. If you do not agree to this processing, you have the option of preventing the installation of cookies by making the appropriate settings in your browser. Further details can be found in the section about cookies above.

Further information about the collection and use of data as well as your rights and protection options in Google’s privacy policy found at

https://policies.google.com/privacy

Sample Data Privacy Policy Statement provided by the Law Offices of Weiß & Partner