I have upgrade the NSM to 188.8.131.52, and an error is coming with
- Automatic Signature Set Download Failure
-Scheduled Callback Detectors download failure
Already check the connection between manager and update server and they pass the test.
and the server have an internet connection.
Go to Solution.
Faizan has given the solution, adding few points to the same,
Kindly make sure that -
> DNS server is reachable from the manager and the sensor.
> If you are using 184.108.40.206 as a DNS server, make sure Sensor / Nsm management's Ip address has connectivity to the same on port 53.
> Make sure to Bypass these Url's from the SSL scanning engine on any upstream firewall/Proxy
In the Network Security Manager, check for ems.log file and filter keyword for 'http' or 'error' that should give you a list of URLs having a communication issue.
In general, it is best to have the following URLs allowed:
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