'Check to see if the source range field is set to allow all traffic'

def _source_ranges_open(self, source_ranges, error_cat='SOURCE_RANGES'):

    errors = []
    open_range = '0.0.0.0/0'
    for source_range in source_ranges:
        if (source_range == open_range):
            ae = make_audit_issue(error_cat, 'OPEN', 'TRAFFIC')
            errors.append(ae)
    return errors
