Just found some problems about the new DSM:
- Connection error when checking the DSM status inside Control Panel->DSM Update
- Timeout when clicking "Available" inside Package Center
- Download station doesn't work after upgrade (cannot download, or even doing search)
Solution to the above problems:
- Select "Allow access" for "If no rules are matched" in the firewall settings (I have set some rules there and thus changing the default to "Deny access", which seems to cause all outgoing connections to drop)
Hope it helps for those who're using firewall rules and upgraded to DSM 4.  |