<185>Oct 16 01:13:24 WAFirewall CEF:0|Barracuda|WAF|1210|119|MALFORMED_VERSION|1|cat=WF dst=52.60.120.91 dpt=80 act=DENY msg=[OPTIONS / RTSP/1.0] duser="-" src=126.24.219.156 spt=45526 requestMethod=OPTIONS app=HTTP requestContext="-" start=Oct 16 2023 01:13:24  rt=1697436804688  request=/ requestClientApplication="Unknown" dvchost=WAFirewall externalId=18b371e2650-d6c5f16 cn2=45526 cn2Label=ProxyPort cs1=global cs1Label=RuleID cs2=NONE cs2Label=FollowUpAction cs3=GLOBAL cs3Label=RuleType cs4=Protocol Violations cs4Label=AttackGroup cs5=126.24.219.156 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: 45526
facilitycode: 23
facilitylabel: local7
fqdn: /
localhostname: WAFirewall
localstarttime: 1697436804688 
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: 126.24.219.156
serverIP: 52.60.120.91
userName: -