If possible, disconnect or isolate the affected system from the network to prevent further communication with the C&C server.Look for relevant entries indicating the blocking of the domain. ![]() Check DNS-query security logs to confirm if the domain is being blocked due to a DNS botnet C&C detection.If the 'Botnet Activity' widget is not found, select the Settings button at the bottom right, select 'Add Widget', and add the 'Botnet Activity' widget. To check botnet activity: Go to Dashboard -> Status and see the 'Botnet Activity' widget.If observing a domain has been blocked by a DNS botnet, take the following steps to investigate and resolve the issue: ![]() This article describes the steps to troubleshoot when having the log event 'Domain was blocked by DNS botnet C&C' for a single user.ĭate= time=11:19:48 eventtime=1688708989099213938 tz="+0530" logid="1501054601" type="utm" subtype="dns" eventtype=" dns-response" level="warning" vd="root" policyid=1 poluuid="aed62bb4-9314-51ec-00f9-6830d58d92f8" policytype="policy" sessionid=18976445 srcip= 192.168.90.23 srcport=64814 srccountry="Reserved" srcintf="lan" srcintfrole="lan" dstip=8.8.4.4 dstport=53 dstcountry="United States" dstintf="port4" dstintfrole="wan" proto=17 profile="Corporate DNS Policy" srcmac="d4:3d:7e:65:e4:d6" xid=24919 qname="" qtype="A" qtypeval=1 qclass="IN" ipaddr="208.91.112.55" msg=" Domain was blocked by dns botnet C&C" action="redirect" botnetdomain=" "
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