How to Keep a Comcast Gateway Secure

Introduction

Your Comcast Gateway transmits a signal through the air and may be detected hundreds of feet away. By default, anybody nearby can use your network. It is highly recommended that you take some simple safety steps such as encrypting and also limiting access to your wireless network.
Comcast gateway

Encrypting the information that is transmitted through the air is the best way to protect communications from eavesdroppers. The two main types of encryption are Wi-Fi Protected Access (WPA) and Wired Equivalent Privacy (WEP). WPA2 is the best choice but many older routers do not have this option. If your router doesn't have WPA2, you should upgrade.

To limit access to your router it is recommended that you use a strong password that isn't freely shared or used anywhere else.

This guide will walk you through the process of protecting your Comcast wireless network.

1 Password Best Practices

Wherever possible, you should pick a password that is impossible to guess and is also resistant to brute-force attacks.

Some devices or systems do not allow special characters or they may have their own requirements.

Password Dos and Don'ts

Dos
Green Check
  • Passwords should be long, 8-12 characters or more.
  • Passwords should be something easy for you to remember, but hard for others to guess or lookup.
  • Passwords should have lots of different character types: upper and lower case letters, numbers, and symbols.
  • Replacing letters with symbols is a simple way to achieve this: use @ for a, and ( for c, as example.
  • Passwords are personal, most services have a way to create a 'linked' account or share services with trusted friends and family.
  • Change passwords regularly. Every 90 to 180 days; this helps keep your accounts from being compromised long-term.
  • If you must write down a password or make note of it, do so only in specially designed programs, or keep and hold the physical copies with the same care and respect you would a social security card or birth certificate. Remember; anyone with your password "is you".
Example of a good password
Don'ts
Red X
  • Don't use short passwords; computers can guess them very easily.
  • Don't use a common word you can find in a dictionary.
  • Don't use information that can be looked up or guessed, such as a birthday, anniversary, or pet's name.
  • Don't use the same password for everything. If one password is compromised, all of the same ones are compromised across all your accounts.
  • Don't share passwords. People with your password "are you" to a computer system, or a service.
  • Don't keep the same password forever. Assume that, at some point, it will be guessed, seen, or otherwise compromised, and it must be changed.
  • Don't write down passwords in the open, or save them in non-encrypted files on your computer.
Example of a bad password
Password Resources

2 Changing Your Xfinity Gateway Settings

We're going to walk you through changing your Gateway settings to make them more secure.

? Do you want to use your Xfinity App or the web portal?

  1. Xfinity App
  2. Web Portal

We're here to help!

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Call or chat with a Tech Pro 24/7.

Your Comcast Gateway transmits a signal through the air and may be detected hundreds of feet away. By default, anybody nearby can use your network. It is highly recommended that you take some simple safety steps such as encrypting and also limiting access to your wireless network.
Comcast gateway

Encrypting the information that is transmitted through the air is the best way to protect communications from eavesdroppers. The two main types of encryption are Wi-Fi Protected Access (WPA) and Wired Equivalent Privacy (WEP). WPA2 is the best choice but many older routers do not have this option. If your router doesn't have WPA2, you should upgrade.

To limit access to your router it is recommended that you use a strong password that isn't freely shared or used anywhere else.

This guide will walk you through the process of protecting your Comcast wireless network.

Wherever possible, you should pick a password that is impossible to guess and is also resistant to brute-force attacks.

Some devices or systems do not allow special characters or they may have their own requirements.

Password Dos and Don'ts

Dos
Green Check
  • Passwords should be long, 8-12 characters or more.
  • Passwords should be something easy for you to remember, but hard for others to guess or lookup.
  • Passwords should have lots of different character types: upper and lower case letters, numbers, and symbols.
  • Replacing letters with symbols is a simple way to achieve this: use @ for a, and ( for c, as example.
  • Passwords are personal, most services have a way to create a 'linked' account or share services with trusted friends and family.
  • Change passwords regularly. Every 90 to 180 days; this helps keep your accounts from being compromised long-term.
  • If you must write down a password or make note of it, do so only in specially designed programs, or keep and hold the physical copies with the same care and respect you would a social security card or birth certificate. Remember; anyone with your password "is you".
Example of a good password
Don'ts
Red X
  • Don't use short passwords; computers can guess them very easily.
  • Don't use a common word you can find in a dictionary.
  • Don't use information that can be looked up or guessed, such as a birthday, anniversary, or pet's name.
  • Don't use the same password for everything. If one password is compromised, all of the same ones are compromised across all your accounts.
  • Don't share passwords. People with your password "are you" to a computer system, or a service.
  • Don't keep the same password forever. Assume that, at some point, it will be guessed, seen, or otherwise compromised, and it must be changed.
  • Don't write down passwords in the open, or save them in non-encrypted files on your computer.
Example of a bad password
Password Resources
We're going to walk you through changing your Gateway settings to make them more secure.
  1. Open your Xfinity App.
    Xfinity App icon
  2. Log In if needed.
  3. Tap the Internet Icon.
    Xfinity app internet icon
  4. Tap your Wireless Gateway.
    Xfinity wireless gateway icon
  5. Select Change Wi-Fi Settings.
    Xfinity my account change wifi settings option
  6. Enter your new network name and password.
  7. Tap Save.
    Xfinity my account app network name and password fields
  8. Your Gateway will update.
    Xfinity app showing gateway being updated

Some precautions should be taken in order to keep your password secure.

Best practices:

  • Do not use a master password that you use everywhere (such as email, work, school, home, network)
  • If possible, do not share your password with anybody.
  • Passwords that are shared with others, like for a home network, should only be shared if necessary.
  • Be aware when typing your password in public, or that in no way anyone is watching.
  • Some types of electronic devices like computers and smartphones can remember passwords, so beware of devices that are not yours.
  • Make a schedule of when to change your password. For example, every 180 days.
  • It is not recommended to write down passwords. But if you have to, make sure that it is neither physically nor visually accessible by others.
  1. Log into www.xfinity.com/myaccount from your web browser and select Settings.
    Xfinity website with settings circled
  2. Select Internet.
    Comcast Xfinity settings showing internet
  3. Select Wi-Fi Credentials.
    Comcast wifi credentials
  4. Select Edit to change your Wi-Fi Name or Password.
    Comcast wifi edit button
  5. Enter your new Wi-Fi Name or Password and select Save.
    Comcast wifi save
  6. Reconnect your wireless devices to your Wi-Fi network using your new network name and password.
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