---
title: "Why do I get the error message \"Operation not permitted\" upon a ping?"
slug: "why-do-i-get-the-error-message-operation-not-permitted-upon-a-ping"
updated: 2026-05-27T11:36:20Z
published: 2026-05-27T11:36:20Z
canonical: "docs.insys-icom.com/why-do-i-get-the-error-message-operation-not-permitted-upon-a-ping"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.insys-icom.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Why do I get the error message "Operation not permitted" upon a ping?

If a ping returns this error message during [debugging](https://docs.insys-icom.com/kb/docs/debugging-en), the router's firewall is probably blocking the ICMP packets. Add a new [firewall rule](https://docs.insys-icom.com/kb/docs/netfilters-en) on the *Network* → *Firewall / NAT* page with the following settings:

- *Packet direction*: **OUTPUT**
- *IP version*: **Alle**
- *Protocol*: **ICMP**
- *Output interface*: select the required interface