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All FAQs → Comcast High Speed Internet FAQ Table of Contents 0.1 Forum Specific (4) 1. Basic Comcast things (16) 1.1 E-mail (7) 1.2 Software (5) 1.3 Personal Web Pages/Online Storage (1) 1.4 Newsgroups (1) 2.Troubleshooting (9) 2.1 Modems (13) 2.2 Speed Tests (2) 3. Other (3) 3.1 Advanced Topics (8) 3.2 Networking (7) 3.21 Comcast Home Networking (2) 3.3 Bandwidth & Usage (7) 3.8 Business Class Service (1) 4. Comcast Digital Voice (CDV) (2) 5. Xfinity WiFi (5) 6. AntiVirus (2) 7. IPv6 (3) Editors: EG , Johkal , sortofageek Last modified on 2013-10-05 08:09:35 view:Revisions 0.1 Forum Specific About the BBR Comcast HSI FAQ. How To Get Help! Is this an official Comcast site and FAQ section? Comcast Employees Authorized to Represent Comcast on BBR 1. Basic Comcast things Can the cable modem work on any cable jack in the house? Can I connect to VPN using my service? Can I run servers (FTP, e-mail, etc) using my service? Does Comcast block service to any websites? How can I find my Local Payment Center? How can I find out if Comcast is available to me? How can I limit disclosure of my name and address by Comcast? How can I obtain a Comcast HSI Self Install Kit? How do I access the My Account? Official FAQs for Comcast HSI? What are the actual Provisioned Speeds? What are the Minimum System Requirements for XFINITY Internet Service? What's included in the Self-Installation Kit? What is Comcast's Walled Garden? What is PowerBoost? What is the email address for Comcast Support? 1.1 E-mail How can I access my Comcast email other than comcast.net? How can I take steps to reduce spam to my e-mail addresses? I forgot my password. How can I reset it? If I am out of Comcast's network can I check my e-mail on my laptop? Mozilla Thunderbird and third-party email What are the e-mail settings? What if I get an account violation about ME sending spam from Comcast? 1.2 Software Do I need the Comcast software? How do I remove the Comcast branding from Internet Explorer? How should I optimize my settings for PC (Windows)? How should I optimize my settings for Macintosh? What media plugins are available? 1.3 Personal Web Pages/Online Storage How do I use FTP to log in? 1.4 Newsgroups Are there any free newsgroup services? 2.Troubleshooting How can I contact Comcast? How can I document troubles with my service? How do I check my IP lease time? How do I choose a good splitter? Where Can I receive additional Comcast Support? My connection is down. What can I do? Why am I seeing so much packet loss in my provider's network? Why do websites take forever to connect, but then load quickly? Why is my IP lease down to 1 hour? 2.1 Modems Can I update my modem's firmware? Explanation of Comcast's Modem Certification Levels Viewing the Modem's Signal Levels, Firmware Version & Log Entries How do I get Comcast to Bridge an Arris Gateway Modem Is it safe to post the address of my modem (MAC)? Should I lease or buy my modem? Should I use USB or Ethernet? What are the differences between the Motorola SB5100, SB5101 & SB5120? What do messages about timeouts mean? What should my Signal Levels be? Which modem should I get? Why does one device pull an IP, but my other device doesn't? Why does the light on my modem blink all the time? 2.2 Speed Tests What are the recommended Speed Test Sites? What other Speed Tests are available? 3. Other What about Coaxial Cable Amplifiers? What is the LFA? Why has my area been upgraded from 64QAM to 256QAM? 3.1 Advanced Topics Comcast DNS website How do I change what DNS server my computer uses? How do I get a different IP address? How the CMTS determines your modem's transmit power What is CRAN? What is HFC (Hybrid Fiber Coax)? What is QAM? What ports does Comcast block? 3.2 Networking Can I hook my modem up to a hub and get online with all my networked PC's? How can I network more than one computer? How can I network my Comcast Connection? How many IP addresses can I get? What is a good router for use with Comcast? What is a Hub/Switch/Router? Where can I find more help with networking? 3.21 Comcast Home Networking What if I lose or forget the Comcast Linksys router username/password? Where do I find more help regarding my Home Networking package? 3.3 Bandwidth & Usage Comcast Network Management Does Comcast have bandwidth use limits? Does Comcast publish anything about bandwidth limits? Has anyone received a warning from Comcast concerning infringement? How do I check my Data Usage? How much data do I use? What is Comcast's Acceptable Use Policy? 3.8 Business Class Service Business Internet Service Tiers 4. Comcast Digital Voice (CDV) Is Comcast Digital Voice the same as other VoIP services? What is Comcast Digital Voice service? 5. Xfinity WiFi What is Xfinity WiFi? Connecting Your Devices to Xfinity WiFi Connect to Xfinity WiFi Xfinity WiFi App Find Xfinity WiFi Hotspots 6. AntiVirus Is Comcast changing the AntiVirus service they provide? Will Comcast support their provided Norton™ Security Suite? 7. IPv6 IPv6 Information IPv6 Connectivity Issues Troubleshooting Comcast IPv6 login and you can contribute to the FAQ

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