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Syslog Data is not being parsed correctly by Fortinet Fortigate App


Syslog data from my Fortinet firewall is not being parsed out correctly.   I have noticed that there are multiple formats of messages.   

This first format parses out correctly. 

...  policyid=474 sessionid=3929476361 user="FRED" group="RegularSupport.Grp" srcip= ... 

These do not (specifically the user field is not populated)

....   policyid=441 sessionid=3929476369 user="BARNEY" srcip=   ....

(missing group after user field)

.....   policyid=471 sessionid=3929476336 user="BETTY" group="TL-AVP-SVP.Grp" srcip= ....

(has "-" in the text for group)

....   policyid=103 sessionid=3929476142 user="WILMA" group="Wkstns_SSLVPN_PD.Grp" srcip=    ......

(has "_" in the text for group).

I tried to do a extract fields on one of the different events, that solved the issue for the new event but the original event no longer works.   

I assume that there is a regex somewhere that parses this out but I cannot find it.  My question is where do I go find out where it is so I can hopefully generate one that works?





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