Previously KSN was working OK. I have a list of IP addresses to allow through coporate firewall. Going into KSC> KSN Proxy statistics>Check KSN connection
receive error "Connection to KSN has been terminated"
I can see in firewall logs that connection is allowed through the permitted rule - connection to 220.127.116.11 & 18.104.22.168 allowed.
What should I be doing to allow KSN participation?
Best answer by intrusus
first, to maintain KSN protection, you should allow clients to connect directly to KSN. In other words, disable the function for the KSC to act as a proxy. Then check locally whether the clients are connected to KSN by clicking "Threat Detection Technologies" on the KES 11 interface. Kaspersky Security Network should now be "Enabled, Available".
Then check the network parameters KSC 11 is using to interact with KSN Services: https://support.kaspersky.co.uk/15052
Maybe you have to change some rules on your firewall.