---
title: "Configure SonicWall Routers in the Old Web Interface"
slug: "configure-sonicwall-routers-in-the-old-web-interface"
updated: 2026-05-17T16:48:03Z
published: 2026-05-21T21:25:00Z
canonical: "help.8x8.com/configure-sonicwall-routers-in-the-old-web-interface"
stale: true
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.8x8.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Configure SonicWall Routers in the Old Web Interface

## Objective

Configuring a SonicWall router in the old web interface.

## Applies To

- SonicWall

## Procedure

The purpose of this article is to provide a **sample configuration**. At the time of article creation, this device was in a known working state on the firmware used. **Keep in mind different firmware versions will interact with hosted VoIP services in different ways.** While this device may be fully functional on the tested and/or current firmware version, it is possible newer revisions will cause disruptions in service or make a device fully compliant with the required settings for hosted VoIP services where it was previously not.

### SonicWall Old Interface

Tested on the following firmware versions:

- Firmware Version 6.5.x.x and later

**Adding or editing 8x8 subnets is recommended when available**. For subnet information, see [X Series Technical Requirements](/support/docs/x-series-technical-requirements).

We highly recommend consulting an IT or network professional when configuring advanced network settings or devices. NAT issues causing duplicate ports have been reported for firmware version 6.2.3.1.-1.9n.

### Disable Consistent NAT and SIP Transformations

1. Go to **VoIP** > **Settings**.
2. Uncheck the boxes next to **Enable Consistent NAT** and **Enable SIP Transformations**. ![SonicWall_Old_Interface_Settings-600x569.png](https://cdn.us.document360.io/e3a59e39-abd3-4423-964c-0a4008dc5673/Images/Documentation/10351)

### Disable Stealth Mode and RTSP

1. Go to **Firewall Settings** > **Advanced**.
2. Uncheck the boxes next to **Enable Stealth Mode** and **Enable RTSP Transformations**. ![SonicWall_Old_Interface_Disable_Stealth_Mode-600x294.png](https://cdn.us.document360.io/e3a59e39-abd3-4423-964c-0a4008dc5673/Images/Documentation/10353)

### Add 8x8 Subnets

1. Go to **Firewall** > **Address Objects**.
2. Click **Add**.![SonicWall_Old_Interface_Add_Subnets-600x381.png](https://cdn.us.document360.io/e3a59e39-abd3-4423-964c-0a4008dc5673/Images/Documentation/10350)
3. Add each 8x8 subnet one at a time. One example shown. ![SonicWall_Old_Interface_8x8_Subnet_Example-350x379.png](https://cdn.us.document360.io/e3a59e39-abd3-4423-964c-0a4008dc5673/Images/Documentation/10346)
4. Click the **Address Groups** tab. ![SonicWall_Old_Interface_Address_Group-600x418.png](https://cdn.us.document360.io/e3a59e39-abd3-4423-964c-0a4008dc5673/Images/Documentation/10352)
5. Click **Add Group**.
6. Name the group **8x8 Subnets**.
7. Add each 8x8 subnet.![SonicWall_Old_Interface_Subnet_Object_Group-500x377.png](https://cdn.us.document360.io/e3a59e39-abd3-4423-964c-0a4008dc5673/Images/Documentation/10348)
8. Click **OK**.

### Set Up Access Rules

1. Go to **Firewall** > **Access Rules**. ![SonicWall_Old_Interface_Access_Rules-600x291.png](https://cdn.us.document360.io/e3a59e39-abd3-4423-964c-0a4008dc5673/Images/Documentation/10345)
2. Click **Add**.
3. Configure the **General, Advanced**, and **QoS** settings. ![SonicWall_Old_Interface_General_Advanced_QoS-550x661.png](https://cdn.us.document360.io/e3a59e39-abd3-4423-964c-0a4008dc5673/Images/Documentation/10349)
4. Set the UDP Connection Inactivity Timeout (seconds): **660** ![SonicWall_Old_Interface_Advanced_Tab-550x664.png](https://cdn.us.document360.io/e3a59e39-abd3-4423-964c-0a4008dc5673/Images/Documentation/10347) ![SonicWall_Old_Interface_QoS_Tab.png](https://cdn.us.document360.io/e3a59e39-abd3-4423-964c-0a4008dc5673/Images/Documentation/10354)
5. Click **OK**.

## Known Issues

- SonicWall TZ400 requires Consistent NAT to be on. The exception to this would be if the TZ400 is on firmware version SonicOS Enhanced 6.2.5.3-35n. With this firmware version, disable Consistent NAT.
- Firmware version 6.2.3.x causes Duplicate UDP ports regardless of NAT settings.
- Firmware verion 6.2.7 has DPI (deep packet inspection) under access groups on NSA series, which causes CQ issues despite rules added in.
- Firmware verion 6.2.7.7 23n (and higher): 802.1p tagging breaks phone connectivity.