Fortigate - Troubleshooting IP connection error & Deny: DNS error' and 'Deny: IP connection error’
This Video provides knowledge and information about explanation of the entry 'action=ip-conn' that may be seen in the traffic logs.
IP-Conn error – This is generally received when there is an issue with the response packet received.
Firewall has allowed the connection but during inspection firewalls sees an issue with the response packet or no response.
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Deny: DNS error' and 'Deny: IP connection error’
Accept:DNS Error and Accept:IP Connection error