Parse IPtables informational logging

#Parse IPtables informational logging
#!/usr/bin/python

def select(string, text):
	pos = text.find(string)
	if pos < 0:
		return None
	else:
		end = text[pos:].find(' ')
		out = line[pos + len(string):pos + end]
		return out


def mysql_insert(text):
	src = select('SRC=', text)
	proto = select('PROTO=', text)
	dpt = select('DPT=', text)
	#not interested in PING
	if proto == 'ICMP':
		pass
	elif src == '0.0.0.0':
		pass
	elif dpt == None:
		pass
	#Exclude own ip
	elif src == '1.1.1.1':
		pass
	#Exclude VPS provider noise
	elif src.find('18.100.18') >= 0:
		pass
	else:
		print src, proto, dpt



with open('syslog.1') as f:
    for line in f.readlines():
        mysql_insert(line)