# How Devices in The Same Network Can Communicate with Each Other?

## Client Isolation Service – Overview <a href="#docs-internal-guid-5f4d530d-7fff-4753-5bba-80a26772f5c8" id="docs-internal-guid-5f4d530d-7fff-4753-5bba-80a26772f5c8"></a>

### What is Client Isolation?

Client isolation is a network feature that controls whether devices (clients) connected to the same network can communicate directly with each other.

When client isolation is enabled, devices cannot directly "see" or communicate with one another — improving security by isolating each device.\
When client isolation is disabled, devices on the same network can interact freely, such as by sending ICMP (ping) requests.

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### How it works?

In the context of our service:

* SIM cards under the same network are assigned with public IP addresses.
* With client isolation disabled, SIM cards are allowed to ping each other, provided:
* By default, the “Client Isolation” is on, make sure to disable it.\ <br>

  <figure><img src="/files/dwjIdSAYTsbMGGoADB8K" alt=""><figcaption></figcaption></figure>
* They belong to the network.
* There are no firewall rules blocking ICMP (ping) traffic.<br>

### Troubleshooting Checklist

* Ensure that both SIMs are under the same network (public IP assigned).
* Confirm that client isolation is disabled.
* Verify that no firewall settings are blocking ICMP/PING traffic.
* Retest connectivity by sending a ping between the two SIMs.

If you need help interpreting the packet capture, please reach out to the Monogoto Support team, and we will be happy to assist.&#x20;

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