Initially, they were reluctant to accept that the issue was caused by a bug in their latest firmware. When we shared these logs with Meraki engineers, they performed the same tests and observed the same results. We observed that we were not receiving SYN/ACK packets from the servers, indicating that there was no two-way communication. To diagnose the issue, we took the logs from the internal interface for the affected services, such as HTTP. We contacted Meraki support for assistance, and it took them a week to figure out what went wrong. Upon investigating the issue, we found out that the problem was caused by a bug in the latest firmware updates pushed by Meraki, specifically versions 18.106 and 18.105. Here I will share my experience and guide you through how to figure out if your Meraki firewall is causing the issue and how to resolve it.įor us, we noticed that we were having trouble reaching the Linux repositories and updating Windows OS. Are you having trouble receiving updates on your Windows or Linux behind Meraki Firewall? It could be due to a bug in the latest firmware updates pushed by Meraki (18.106 or 18.105 or even 17.xx), which is preventing two-way communication between your devices and the update servers hosted in the internet.
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