Home | About Us | Español | Search | Email Offers | Customer Service | My Account
Chat with Tech Support Email Tech Support  
Troubleshoot email, wireless, intermittent connection and slow speeds Setup and Troubleshoot e-mail software Security Downloads, Information, and Terms Setup and Troubleshoot Modems Setup and Troubleshoot Wireless on your Computer or Modem step-by-step tutorials on wired troubleshooting, wireless troubleshooting and email

ZyXEL Q100 CenturyLink Modem

Collapse all | Expand all


  Basic Setup
The following documents are for CenturyLink High-Speed Internet®, CenturyLink High-Speed Internet® with Office Plus (also known as qwestoffice.net) or Qwest.net® customers:

*NOTE: If you have an ISP other than what is listed above, please contact your ISP directly for support. If you are unsure how to contact your ISP, you can look them up using the Internet Service Provider List.

  Advanced Setup

*These functions are not supported by CenturyLink High-Speed Internet Technical Support and should only be used by advanced network administrators.

  Downloads - Firmware and Drivers
Firmware - Go to the Modem Firmware page to check for a the latest release.
Drivers - There are no Drivers available for this modem.
  What is Modem Firmware?
Firmware is like an operating system that tells your modem how to operate. It provides the modem's hardware with operating rules, instructions, and logic.
  Why Should I Upgrade Firmware?
Firmware upgrades can add new features, improve performance and enhance the security of the modem's current firmware.
  FAQs
  General
  Which protocols does the ZyXEL® Q100 support?
The internal LAN connections support multiple protocols (e.g., TCP/IP, NetBEUI, IPX/SPX and AppleTalk). The External WAN connection supports only TCP/IP.
  Can I connect multiple wired (Ethernet) connections to my modem?
No, this modem has only one Ethernet port.
  Networking
  What are static IP addresses and how can I get them?
A static IP address is a unique numeric address that identifies your computer on the Internet. CenturyLink, as your Internet Service Provider (ISP), can assign a static IP address to be a permanent address for your computer. Learn more.
  What is the valid IP range I can use for my home network?
The valid IP range is 192.168.0.2 through 192.168.0.254. We recommend using the default settings, but IP ranges and LAN subnets can be changed if necessary.
  How do I make my laptop work both at home and at the office?
You'll need to reconfigure your network settings (e.g., workgroup, domain, password, user name, IP address). You may also use third-party software such as NetSwitcher to switch automatically between different configurations.
  Can I play games between computers on my network or on the Internet?
Yes, if the games were designed for multi-player or network play. Check the game documentation.
  How can I make the FTP or Web server on my network available to Internet users?
For a Web server:
Enable port forwarding for port 80 to the IP address of your Web server.

For an FTP server:
Enable port forwarding for port 21 to the IP address of your FTP server.
  Security
  Does my modem act as a firewall?
The ZyXEL® Q100 provides its security using Network Address Translations (NAT), which acts as a physical barrier between your network and the Internet.
A configurable onboard firewall is also available and can be configured via the modem interface. Step-by-step instructions are available.
  What is NAT and how does it protect my network?
Network Address Translation (NAT) is a level of security, which masks the private IP addresses of the PCs on your network with a single public IP address.
With NAT, the private IP address of any PC on your network is never transmitted over the Internet.
  Which Virtual Private Networking (VPN) protocols are supported?
The ZyXEL® Q100 supports pass-through for IPSec, PPTP and L2TP.
  Can I use an Internet firewall or other security programs with my network?
Yes, a third-party, software-based firewall can be used with the ZyXEL® Q100.