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QuickBooks Firewall and Internet security settings for updates and network access
February 10, 2012
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QuickBooks Firewall and Internet security settings for updates and network access: For QuickBooks Pro 2012, the following ports need to be opened for incoming and outgoing network traffic: 80, 8019, 56722, and 55348-55352. For more information about other editions and/or the indiviual executables that utilize the ports, see: Source: http://support.quickbooks.intuit.com/support/articles/SLN41458