Self2WAN ICMP Type B Detected! 5 Fixes

self2wan icmp type b detected!
self2wan icmp type b detected!

NETGEAR makes some of the best communication equipment and networking devices. Their devices are known all over the world for their commendable security, stability, and performance. With that being said, NETGEAR supports an error log in almost all their latest routers and modems that allow you to pinpoint any errors that you might be facing and causing you inconvenience in your networking experience. It is recommended to check your error logs regularly to ensure that there are no issues with your network or your router.

Some people tend to check their router’s error log time to time and upon seeing an error that says, Self2WAN ICMP Type B Detected, it can be alarming as a virus warning. To know what it means, here is a detailed insight.

Self2WAN ICMP Type B Detected! What Does it Mean?

If you are getting any error such as Self2WAN ICMP Type B Detected, that means you have nothing to be worried about in the first place. The error message in your log means that your firewall is essentially working as it should and you are protected against any ICMP threat on your router. But the thing to start with is that you are protected indeed from a threat that tried to access your privacy. This message in the error log means that there has been a third-party attempt to access your router traffic and data, and you need to take adequate steps to ensure that it never happens again. To fix the issue, here are a few things you can do.

1) Check Remote Access

If you are using remote access for some reason, let it be for official purposes, troubleshooting, or any reason. That can trigger this error in the router. You need to check the error log time and match it with the time you were using remote access. If both times are the same, then you can rest assured that this was caused due to the remote access you were using and there have not been any third-party attempts of intrusion on your router or PC.

2) Update your router Firmware

If you believe that the times don’t check out or you have not been using any remote access lately, the first thing you need to do is check for any updates for your router’s firmware. An outdated firmware has chances of developing the bugs over time and can trigger such errors unnecessarily. Once you have successfully updated your router’s firmware, you can check error logs frequently and ensure that the error does not appear again.

3) Check your Firewall and antivirus settings

An outdated firewall or antivirus on your devices that you are using can also cause you to have this error logged on your router. You need to make sure that all your antivirus software and your firewalls are up-to-date and configured properly. This will ensure that you are not seeing any such errors on your router again. However, if the error appears again even after checking all the steps above, you need to run some deeper checks such as.

4) Reset your router

There is also a possibility that your router settings or some hardware component might be mistakenly triggering this error on your router’s error log. If that is the case, you will need to reset your router to its default settings and this will essentially solve the problem for good. To reset your router, you will need to locate the small reset button at the back of your router that is located beside the power button. Keep it pressed for 10-15 seconds until the lights on your router blink again and it will be as good as new. The only thing to keep in mind while resetting your router is that you will lose all the settings on it and you will need to configure them all again according to your preference and requirements.

5) Consult network admin

If none of the above steps are solving the issue for you, it is time that you consult a network admin who will be able to look deeper into your network and will be able to diagnose the issue properly to help you eliminate the problem. It is not a big deal, but if you are serious about it, this would be the last resort for you.

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