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# Wireguard - Adding Nameserver entries to Client Configs

How to add PostUp and PostDown scripts to WireGuard client configurations for DNS nameserver resolution on Windows and Linux.

The following are instructions for adding a **PostUp** and **PostDown** script to the **Wireguard** config.\
For **Windows**, this adds **Powershell** commands for adding and removing a **DNS Client Rule** when the client connects and disconnects.

## Windows Clients

1. In the **Windows** Wireguard client, **edit the config**.
2. Add the following commands in the **\[Interface]** section:

```pwsh
PostUp = powershell -command "Add-DnsClientNrptRule -Namespace 'domainname.com' -NameServers '10.1.10.2'"
PostDown = powershell -command "Get-DnsClientNrptRule | Where { $_.Namespace -match '.*domainname\.com' } | Remove-DnsClientNrptRule -force"
```

3. Change the following entries to match **your** setup:
   * **Namespace**: A comma-separated list of domain names to add.
   * **NameServers**: A comma-separated list of nameserver IP addresses.

{% hint style="info" %}
**For the -match, make sure to include a backslash (\\) before each period (.)**
{% endhint %}

***

## Linux Clients

This may vary based on your Linux distribution.

1. **Edit the config file** on the **Linux** client.
2. In the **\[Interface]** section, add the following:

```bash
PostUp = resolvectl dns %i 10.1.10.2; resolvectl domain %i domainname.com
PreUp = iptables -A INPUT -i wg -m state --state ESTABLISHED,RELATED -j ACCEPT
PreUp = iptables -A INPUT -i wg -j REJECT
PostDown = iptables -D INPUT -i wg -m state --state ESTABLISHED,RELATED -j ACCEPT
PostDown = iptables -D INPUT -i wg -j REJECT
```

3. Replace **10.1.10.2** with the correct IP of your **nameserver**.
4. Replace **domainname.com** with your domain name.

***

{% hint style="info" %}
**Document Information**

* Last Updated: 2024-08-29
* vergeOS Version: 4.12.6
  {% endhint %}


---

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