<185>Jul 21 02:59:06 WAFirewall CEF:0|Barracuda|WAF|1101|119|MALFORMED_VERSION|1|cat=WF dst=97.81.4.181 dpt=443 act=DENY msg=[PRI * HTTP/2.0] duser="-" src=76.57.190.254 spt=34606 requestMethod=PRI app=TLSv1.3 requestContext="-" start=Jul 21 2022 02:59:06  rt=1658390346707  request=/* requestClientApplication="Unknown" dvchost=WAFirewall externalId=1821fc47bd3-3cb75718 cn2=34606 cn2Label=ProxyPort cs1=global cs1Label=RuleID cs2=NONE cs2Label=FollowUpAction cs3=GLOBAL cs3Label=RuleType cs4=Protocol Violations cs4Label=AttackGroup cs5=76.57.190.254 cs5Label=ProxyIP cs6="-" cs6Label=SessionID 

This is a syslog message from a product called Barracuda WAF by Barracuda. The following fields were extracted from the message:
senderhost: 10.0.0.250
serverport: 443
severitylabel: alert
tags: ['RuleID:global', 'ProxyIP:162.142.125.210', 'barracuda_waf_MALFORMED_VERSION', 'RuleType:GLOBAL', 'barracuda_waf', 'rfc3164', 'cef', 'SessionID:-', 'AttackGroup:Protocol Violations', 'FollowUpAction:NONE', 'MALFORMED_VERSION']
productids: [0]
sourceinfo: unknown
localstarttime: 1658390346707 
sensitivity: normal
localhostname: WAFirewall
priority: 185
facilitylabel: local7
messagetype: MALFORMED_VERSION
severitycode: 9
fqdn: /*
clientport: 34606
vendorcode: 119
action: block
facilitycode: 23
streamName: barracuda_waf
clientIP: 76.57.190.254
serverIP: 97.81.4.181
userName: -