<185>Sep 12 21:08:42 WAFirewall CEF:0|Barracuda|WAF|1210|342|GEO_IP_BLOCK|1|cat=WF dst=115.82.81.38 dpt=443 act=DENY msg=[Fake Crawler] duser="-" src=108.31.252.56 spt=45982 requestMethod=GET app=TLSv1.3 requestContext="-" start=Sep 12 2023 21:08:42  rt=1694570922196  request=/comm/SinglePageRegPledge.jsp requestClientApplication="facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)" dvchost=WAFirewall externalId=18a8c4c40be-43959d59 cn2=45982 cn2Label=ProxyPort cs1=global cs1Label=RuleID cs2=NONE cs2Label=FollowUpAction cs3=GLOBAL cs3Label=RuleType cs4=Forceful Browsing cs4Label=AttackGroup cs5=108.31.252.56 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: 45982
facilitycode: 23
facilitylabel: local7
fqdn: /comm/SinglePageRegPledge.jsp
localhostname: WAFirewall
localstarttime: 1694570922196 
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', 'RuleType:GLOBAL', 'barracuda_waf', 'rfc3164', 'GEO_IP_BLOCK', 'cef', 'SessionID:-', 'FollowUpAction:NONE', 'AttackGroup:Forceful Browsing', 'ProxyIP:69.171.251.3']
vendorcode: 342
streamName: barracuda_waf
clientIP: 108.31.252.56
serverIP: 115.82.81.38
userName: -