Effective August 12, 2026. TestMyFirewall.com is operated from Muskegon, Michigan, United States.
These terms apply to your use of TestMyFirewall.com, including the firewall test and open port checker on this site. By using the site, you agree to them. If you do not agree, please do not use the site.
When you run a test, our server opens a normal TCP connection back to your own public IP address, which we read from your connection to this site. You cannot enter someone else's address, and the test will not scan any address other than the one you are connecting from.
The result tells you whether that port appeared open, closed, or filtered from the public internet at that moment. It is a point-in-time observation, not a security audit.
You may use this site only to test a connection you own or are authorized to test. Do not use it on a network you do not have permission to assess, and do not use it to plan or support unauthorized access to any system.
If you are on a shared, corporate, school, or mobile carrier network, the address we see may belong to your provider rather than to your device, and results may reflect their equipment instead of yours. Get permission before testing a network you do not control.
The site and the test are provided "as is" and "as available," without warranties of any kind, whether express or implied, including any implied warranties of merchantability, fitness for a particular purpose, accuracy, or non-infringement.
We do not warrant that results will be accurate, complete, or uninterrupted. Firewall and port results can be affected by carrier-grade NAT, VPNs, proxies, transient network conditions, intermediate filtering, and your own equipment. A port reported as closed or filtered is not a guarantee that a system is secure, and a port reported as open is not by itself proof of a vulnerability.
Nothing on this site is professional security, legal, or compliance advice. The results and any explanatory material are general information only. Do not rely on them as your sole basis for a security decision. For a real assessment of your network, consult a qualified security professional.
To the maximum extent permitted by law, TestMyFirewall.com and its owner will not be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, or for any loss of profits, data, business, or goodwill, arising out of or relating to your use of or inability to use the site, even if advised of the possibility of such damages.
To the maximum extent permitted by law, our total liability for any claim relating to the site will not exceed one hundred United States dollars (US $100.00).
Some jurisdictions do not allow certain limitations of liability or exclusions of implied warranties, so some of the above may not apply to you. In that case, our liability is limited to the greatest extent permitted by law.
To run a test we necessarily process the public IP address you are connecting from, because that address is what the test measures. We do not require an account and we do not ask you for personal information to run a test. We do not sell your information.
This site is served through Cloudflare, which processes requests on our behalf and may retain standard operational and security logs. Third-party services used on this site, such as advertising or analytics where present, are governed by their own privacy policies. If you email us, we will have whatever you choose to put in that email.
Test results link to port reference pages on AuditMyPC.com, and the site may link to other third-party resources. We are not responsible for the content, accuracy, or practices of any third-party site.
We may change, suspend, limit, or discontinue the site or any part of it at any time, including applying rate limits to keep the service available to everyone. We may also update these terms; if we do, we will change the effective date above. Continued use after a change means you accept the updated terms.
Please read this section carefully. It affects how disputes are resolved and limits your right to bring a lawsuit or participate in a class action.
Any dispute, claim, or controversy arising out of or relating to these terms or your use of the site will be resolved by binding individual arbitration rather than in court, except as stated below. Arbitration will be administered by a recognized arbitration provider under its consumer arbitration rules, and will take place in or near Muskegon County, Michigan, or by remote or documents-only proceeding where the provider's rules allow it.
Class action waiver. Disputes will be arbitrated only on an individual basis. You and we each waive the right to bring or participate in any class, collective, consolidated, or representative proceeding.
Exceptions. Either party may bring an individual claim in small claims court if it qualifies, and either party may seek injunctive or equitable relief in court for actual or threatened infringement or misuse of intellectual property.
If arbitration does not apply. If the arbitration agreement above is found unenforceable or does not apply to a particular dispute, that dispute will be brought exclusively in the state or federal courts located in or serving Muskegon County, Michigan, and you and we consent to the personal jurisdiction and venue of those courts.
Governing law. These terms are governed by the laws of the State of Michigan, without regard to its conflict of law rules.
Questions about these terms can be sent to help@testmyfirewall.com.