Can anyone please help me how can i parse this firewall log?

yes you can use this as a sample log :
2000-06-30 01:44:00: {exwire-NAT-Rules} PSERVE_SESSION_OPEN: application:none, lsi.32 101.22.954.358.84355 [115.109.546.105.62589] -> 66.451.684.74:99 (TCP)