Prints conntrack stats for protocols and connection states

conntrack-stats.py

#!/usr/bin/env python

protocols = dict()
connection_states = dict()

import subprocess
output = subprocess.check_output('conntrack -L', shell = True)
for row in output.split('\n'):
    elements = row.split()

    try:
        element = elements[0]
        if element in protocols:
            protocols[element] += 1
        else:
            protocols[element] = 1
    except IndexError:
        pass

    try:
        element = elements[3]
        if element[0].isupper():
            if element in connection_states:
                connection_states[element] += 1
            else:
                connection_states[element] = 1
    except IndexError:
        pass

print protocols
print connection_states

Sample output:

{'unknown': 8, 'udp': 31327, 'icmp': 81, 'gre': 2, 'tcp': 43877}
{'ESTABLISHED': 29297, 'SYN_SENT2': 9, 'LAST_ACK': 82, 'FIN_WAIT': 10, 'SYN_RECV': 7, 'TIME_WAIT': 5193, 'CLOSE': 448, 'SYN_SENT': 8329, 'CLOSE_WAIT': 502}