<185>Feb 15 10:45:08 WAFirewall CEF:0|Barracuda|WAF|1200|342|GEO_IP_BLOCK|1|cat=WF dst=214.228.121.0 dpt=443 act=DENY msg=[GeoIP Policy Match] duser="-" src=131.42.253.25 spt=48922 requestMethod=GET app=TLSv1.3 requestContext="-" start=Feb 15 2023 10:45:08  rt=1676479508529  request=/Volunteer/VolOpInfo.jsp requestClientApplication="Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)" dvchost=WAFirewall externalId=18655f73031-e3cd7126 cn2=48922 cn2Label=ProxyPort cs1=global cs1Label=RuleID cs2=NONE cs2Label=FollowUpAction cs3=GLOBAL cs3Label=RuleType cs4=Forceful Browsing cs4Label=AttackGroup cs5=131.42.253.25 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', 'barracuda_waf_GEO_IP_BLOCK', 'RuleType:GLOBAL', 'barracuda_waf', 'rfc3164', 'GEO_IP_BLOCK', 'cef', 'SessionID:-', 'FollowUpAction:NONE', 'ProxyIP:87.250.224.53', 'AttackGroup:Forceful Browsing']
productids: [0]
sourceinfo: unknown
localstarttime: 1676479508529 
sensitivity: normal
localhostname: WAFirewall
priority: 185
facilitylabel: local7
messagetype: GEO_IP_BLOCK
severitycode: 9
fqdn: /Volunteer/VolOpInfo.jsp
clientport: 48922
vendorcode: 342
action: block
facilitycode: 23
streamName: barracuda_waf
clientIP: 131.42.253.25
serverIP: 214.228.121.0
userName: -