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Troubleshooting: Device Registration Behind SonicWall Firewall Fails

Symptom

The devices are detected by the UMS during a scan, but registration fails. UMS console shows an error message like "Unexpected end of input stream found at ...". 

Possible Causes

The following causes have been reported with firewalls by SonicWall; 

Solution

  1. In SonicWall, under DPI-SSL Status, add the IP address of the UMS server to the list of DPI-SSL exclusions.

  2. Restart the VPN tunnel.

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