<185>Oct 16 01:09:33 WAFirewall CEF:0|Barracuda|WAF|1210|119|MALFORMED_VERSION|1|cat=WF dst=119.145.50.125 dpt=80 act=DENY msg=[GET /index.htm HTTP/0.9] duser="-" src=211.42.41.137 spt=35047 requestMethod=GET app=HTTP requestContext="-" start=Oct 16 2023 01:09:33  rt=1697436573435  request=/index.htm requestClientApplication="Unknown" dvchost=WAFirewall externalId=18b371a9efb-129cc042 cn2=35047 cn2Label=ProxyPort cs1=global cs1Label=RuleID cs2=NONE cs2Label=FollowUpAction cs3=GLOBAL cs3Label=RuleType cs4=Protocol Violations cs4Label=AttackGroup cs5=211.42.41.137 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:
action: block
clientport: 35047
facilitycode: 23
facilitylabel: local7
fqdn: /index.htm
localhostname: WAFirewall
localstarttime: 1697436573435 
messagetype: MALFORMED_VERSION
priority: 185
senderhost: 10.0.0.250
sensitivity: normal
serverport: 80
severitycode: 9
severitylabel: alert
sourceinfo: unknown
tags: ['RuleID:global', 'barracuda_waf_MALFORMED_VERSION', 'barracuda_waf', 'rfc3164', 'cef', 'SessionID:-', 'AttackGroup:Protocol Violations', 'FollowUpAction:NONE', 'MALFORMED_VERSION', 'RuleType:GLOBAL', 'ProxyIP:143.244.39.22']
vendorcode: 119
streamName: barracuda_waf
clientIP: 211.42.41.137
serverIP: 119.145.50.125
userName: -