def delete_rule(name=None,
                localport=None,
                protocol=None,
                dir=None,
                remoteip=None):
    '''
    .. versionadded:: 2015.8.0

    Delete an existing firewall rule identified by name and optionally by ports,
    protocols, direction, and remote IP.

    Args:

        name (str): The name of the rule to delete. If the name ``all`` is used
            you must specify additional parameters.

        localport (Optional[str]): The port of the rule. If protocol is not
            specified, protocol will be set to ``tcp``

        protocol (Optional[str]): The protocol of the rule. Default is ``tcp``
            when ``localport`` is specified

        dir (Optional[str]): The direction of the rule.

        remoteip (Optional[str]): The remote IP of the rule.

    Returns:
        bool: True if successful

    Raises:
        CommandExecutionError: If the command fails

    CLI Example:

    .. code-block:: bash

        # Delete incoming tcp port 8080 in the rule named 'test'
        salt '*' firewall.delete_rule 'test' '8080' 'tcp' 'in'

        # Delete the incoming tcp port 8000 from 192.168.0.1 in the rule named
        # 'test_remote_ip'
        salt '*' firewall.delete_rule 'test_remote_ip' '8000' 'tcp' 'in' '192.168.0.1'

        # Delete all rules for local port 80:
        salt '*' firewall.delete_rule all 80 tcp

        # Delete a rule called 'allow80':
        salt '*' firewall.delete_rule allow80
    '''
    cmd = ['netsh', 'advfirewall', 'firewall', 'delete', 'rule']
    if name:
        cmd.append('name={0}'.format(name))
    if protocol:
        cmd.append('protocol={0}'.format(protocol))
    if dir:
        cmd.append('dir={0}'.format(dir))
    if remoteip:
        cmd.append('remoteip={0}'.format(remoteip))

    if protocol is None \
            or ('icmpv4' not in protocol and 'icmpv6' not in protocol):
        if localport:
            if not protocol:
                cmd.append('protocol=tcp')
            cmd.append('localport={0}'.format(localport))

    ret = __salt__['cmd.run_all'](cmd, python_shell=False, ignore_retcode=True)
    if ret['retcode'] != 0:
        raise CommandExecutionError(ret['stdout'])

    return True