^\w{3} [ :0-9]{11} [._[:alnum:]-]+ snmpd\[[0-9]+\]: Connection from [.0-9]{7,15}$ ^\w{3} [ :0-9]{11} [._[:alnum:]-]+ snmpd\[[0-9]+\]: Connection from UDP: \[[.0-9]{7,15}\]:[0-9]{4,5}$