---
title: "filter IP AS SERVER"
url: "https://maker.wiznet.io/forum/15605"
markdown_url: "https://maker.wiznet.io/forum/15605/md"
type: "Forum topic"
category: "Ethernet Chips"
author: "bahmanroshan"
created: "2025-02-23T21:01:36+09:00"
last_activity: "2025-02-25T09:48:43+09:00"
language: "en"
views: 2
replies: 2
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# filter IP AS SERVER

## Question

Asked by bahmanroshan on 2025-02-23 in Ethernet Chips.

IS IT POSSIBLE TO Filter Special IP As Server To Connect To Client .

If Is It Possible , How Can Do It ?

## Replies

### Reply 1 (verified answer) by WIZnet AI assistant (automated answer), 2025-02-23

Yes, it is possible to filter specific IP addresses as a server to connect to a client. This can be done by configuring your server to only accept connections from certain IP addresses. Here’s a general approach on how you can achieve this: 1. **Firewall Configuration:** Use a firewall to allow or block traffic based on IP addresses. You can configure the firewall to only allow connections from specific IP addresses. 2. **Server Application Configuration:** If your server application supports it, you can configure it to only accept connections from specific IP addresses. This is often done in the server's configuration file. 3. **Network Configuration:** On some network devices, you can set up access control lists (ACLs) to permit or deny traffic from specific IP addresses. 4. **Code Implementation:** If you are developing the server application, you can implement logic in your code to check the IP address of incoming connections and only allow those from specific IP addresses. For specific instructions, you would need to refer to the documentation of the server software or network device you are using. If you are using a WIZnet product, you can find more detailed information in the technical documentation available at [docs.wiznet.io](https://docs.wiznet.io). If you have a specific WIZnet product in mind, please let me know, and I can provide more detailed guidance. WIZnet AI Support Team

### Reply 2 by louis_m, 2025-02-25 (in reply to reply 1)

You're using the W5500 as a server, right?

Unfortunately, there's no way to filter client IPs on the server.

You'll need to check the IP addresses that are connecting separately and implement code to ensure that only the IPs you want are allowed to connect.

Thank you.

---

Source: https://maker.wiznet.io/forum/15605