<185>Oct 20 00:04:43 WAFirewall CEF:0|Barracuda|WAF|1210|342|GEO_IP_BLOCK|1|cat=WF dst=73.103.73.124 dpt=443 act=DENY msg=[GeoIP Policy Match] duser="-" src=159.169.24.234 spt=13990 requestMethod=GET app=TLSv1.3 requestContext="-" start=Oct 20 2023 00:04:43  rt=1697778283784  request=/comm/SinglePageRegEvent.jsp requestClientApplication="Mozilla/5.0 (compatible; SemrushBot/7~bl; +http://www.semrush.com/bot.html)" dvchost=WAFirewall externalId=18b4b78b508-46cb56c8 cn2=13990 cn2Label=ProxyPort cs1=global cs1Label=RuleID cs2=NONE cs2Label=FollowUpAction cs3=GLOBAL cs3Label=RuleType cs4=Forceful Browsing cs4Label=AttackGroup cs5=159.169.24.234 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: 13990
facilitycode: 23
facilitylabel: local7
fqdn: /comm/SinglePageRegEvent.jsp
localhostname: WAFirewall
localstarttime: 1697778283784 
messagetype: GEO_IP_BLOCK
priority: 185
senderhost: 10.0.0.250
sensitivity: normal
serverport: 443
severitycode: 9
severitylabel: alert
sourceinfo: unknown
tags: ['RuleID:global', 'barracuda_waf_GEO_IP_BLOCK', 'AttackGroup:Forceful Browsing', 'RuleType:GLOBAL', 'barracuda_waf', 'rfc3164', 'cef', 'SessionID:-', 'FollowUpAction:NONE', 'ProxyIP:185.191.171.8', 'GEO_IP_BLOCK']
vendorcode: 342
streamName: barracuda_waf
clientIP: 159.169.24.234
serverIP: 73.103.73.124
userName: -