Pacific Internet - Ukiah, California

ZyXEL P-660HN-51

ZyXEL P-660HN-51

This guide will instruct you how to configure the P-660HN-51 modem/router to work with Pacific Internet DSL.

Step 1 – Login

Connect your computer to the P-660HN-51 modem/router. Open a web browser and use the address bar to navigate to the address You should receive a login prompt, similar to the image below. Use the following default login information and then click Login.

  • Default username: admin
  • Default password: 1234
ZyXEL P-660HN-51 Login

After logging in, the next page may tell you about the last login. To avoid seeing this message in the future, uncheck Show this page next time. Click Continue to proceed.

ZyXEL P-660HN-51 Last Login

Step 2 – Broadband Changes

ZyXEL P-660HN-51 Navigate To Broadband

Begin by navigating to the Broadband settings. Here we'll be configuring the settings for the DSL signal to get in sync with the equipment in the Central Office.

  • Click Network Settings along the bottom
  • Click Broadband from the menu that appears

Under the Broadband settings, you'll see a single connection already set up (example below). Click the pencil and paper icon (circled in red) under Modify to edit.

ZyXEL P-660HN-51 Edit WAN

In order to work with our service, the VPI and VCI must be 0 and 35, respectively. Click Apply in the far lower right when done. You may need to navigate to the bottom of the page to see the Apply button.

ZyXEL P-660HN-51 VCI Change

Step 3 – Wireless Changes

ZyXEL P-660HN-51 Navigate To Wireless

Next, we'll navigate to the Wireless section and change the Security Mode to WPA2. Older wireless security standards are not recommended, being notoriously insecure, but it is a fact of life that older devices may not support newer standards, so if you find that you need it, it is possible to enable WPA-PSK compatibility (shown below), among others.

  • Click Network Settings along the bottom
  • Click Wireless from the menu that appears

On the Wireless settings page, navigate to the grey box. In the grey box, make the following changes:

  1. Change the Security Mode to WPA2-PSK
  2. Click on More in the lower right
  3. If necessary, you can set WPA-PSK Compatible to Enable here
  4. Click Apply in the lower right to save the settings
ZyXEL P-660HN-51 Wireless Settings

Step 4 – UPnP

ZyXEL P-660HN-51 Navigate To Home Networking

We'll be disabling UPnP, due to security issues.

  • Click Network Settings along the bottom
  • Click Home Networking from the menu that appears

In the upper left, there will be tabs for settings related to Home Networking. Click on the UPnP tab and select Disable. Click Apply to save your changes.

ZyXEL P-660HN-51 Disable UPNP

Step 5 – Firewall

ZyXEL P-660HN-51 Navigate To Firewall

Due to a known bug in the firmware of this equipment, the firewall must be set to Low. This is unfortunate, but without this setting, the Internet connection is practically unusable. The primary symptom of this issue is an inability to stream, complete long-running downloads, or sustain other persistent connections.

The other security measures in Access Control are intended to avoid some common attacks.

  • Click Security Settings along the bottom
  • Click Firewall from the menu that appears

Step 5a – General

On the General tab, move the blue dot under the Low heading and click Apply.

ZyXEL P-660HN-51 Low Firewall

Step 5b – Access Control

Once the page refreshes, click on the Access Control tab in the upper left.

  • Select Enable for DoS Protection
  • Select Enable for Deny Ping Response
  • Click Apply
ZyXEL P-660HN-51 DoS Protection

Configuration Complete!

Now that the Zyexl P-660HN-51 modem/router is configured, you can log out by clicking Logout at the top-right of the page.