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Disabling a Firewall

Backblaze may report that it is offline or has not backed up in a long time, even if the your computer can connect to the Internet. The most likely culprit is a firewall. Below are ways to disable popular firewalls.

Note: Backblaze does not recommend permanently disabling your firewall. If Backblaze starts to work with your firewall disabled, please work with your firewall vendor to permit only Backblaze to access the Internet while the firewall is enabled.

Windows XP Firewall
For more information, visit the Microsoft XP firewall support page.

  1. Click Start, click Run, type Firewall.cpl, and then click OK.
  2. On the General tab, click Off (not recommended).
  3. Click OK.

Windows Vista Firewall
For more information, visit the Microsft Vista firewall support page

  1. Open Windows Firewall by clicking the Start button , clicking Control Panel, clicking Security, and then clicking Windows Firewall.
  2. Click Turn Windows Firewall on or off. If you are prompted for an administrator password or confirmation, type the password or provide confirmation
  3. Click Off (not recommended), and then click OK.

Trend Micro Internet Security 2009
For more information, visit the Trend Micro page for disabling the firewall

  1. Open the Trend Micro Internet Security main console by doing any of the following:
  2. Click Start > Programs or All Programs > Trend Micro Internet Security > Trend Micro Internet Security.
  3. Double-click the Trend Micro Internet Security icon on the lower right corner of your screen.
  4. Click Personal Firewall Controls on the left panel.
  5. Under Personal Firewall, click Settings.
  6. To enable the Personal Firewall, put a checkmark in the Activate the Personal Firewall checkbox. To disable it, remove the checkmark.
  7. Click OK

Norton 360 (by Symantec)
For more information, visit the Norton 360 support page.

  1. Open Norton 360
  2. Go to Settings > Firewall > Program Rules
  3. Add "bztransmit" if it is not there in the list and select "Allow" from the access menu.
    (bztransmit is found in "C:\Program Files\Backblaze\bztransmit.exe")
    Screenshot of Norton 360 Program Rules
  4. Click the Apply button

McAfee

  1. Double-click your taskbar icon to open the Security Center.
  2. If you don't see "Configure" at the left then click "Advanced Menu" at the bottom left.
  3. Click "Internet & Network" at the upper left. To the right you will see that you can disable the firewall.
  4. Warning - you will be constantly reminded that the firewall is disabled. To stop that click "Security Center" on the same upper left side menu, then you'll see "Protection Status" at the right, click "Advanced" in that window and you'll see various warnings can be turned off.

ZoneAlarm

I think you just need to configure Zone Alarm to allow the Backblaze software to access the internet. Specifically, you need to allow the executable "bztransmit.exe" to access services on the internet. Here is the relevant Zone Alarm FAQ on how to configure the firewall. By configuring ZoneAlarm this way you can have a firewall and use the Backblaze service.

Instructions can be found here to exempt a program from ZoneAlarm

The complete path to bztransmit.exe is "C:\Program Files\Backblaze\bztransmit.exe"