[Fortigate] IP connection error

5.4.8 Firmware.

IP connection error log is displayed.

What is the cause, and how can I fix it?

New Member

Hi,

Probably because:

Regards,

New Member

I suppose it is a routing issue

Staff

If the session is a DNS session (port 53), and the response code isn't 0.

If the session isn't a DNS session, then the session received an ICMP packet with error code:

ICMP_DEST_UNREACH ICMP_SOURCE_QUENCH ICMP_TIME_EXCEEDED ICMP_PARAMETERPROB ICMP_REDIRECT

It is enabled for the session if the policy has traffic log enabled, e.g., set to logtraffic-all (have to verify).

New Member

make sure the system is actually online and that the Microsoft firewall is not blocking the response.

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