There is nothing like having your firewall shut down in the middle of a busy day. But this is exactly what happened to many Sonciwall users.
According to a short article at Fudzilla certain Licensing Servers at Sonicwall started recieving erroneous information that caused them to shut down. This left many Sonicwall users in the dark as their licensing keys reset.
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"This may have caused the product license key to be reset, and in some cases may have affected the products' operation. The issue has been corrected and all servers and licensing functions have been restored," says SonicWall.
Since the products listed included SonicWall UTM Firewall Appliances-PRO series, TZ series and NSA series; all SonicWall Email Security Appliances and Email Security software; SonicWall Content Security Manager Appliances; all Continuous Data Protection Appliances; and SGMS managed appliances, it would have left many companies completely vulnerable for three hours.