.. -*- coding: utf-8; -*-

==========

 Network.

==========

.. contents::

Ukraine internet provider.

==========================

Utel.

-----

User - none, password - none, phone - ``*99***1#`` or ``*99#``.

Peoplenet.

----------

User and password you get by sending SMS message to ``920`` number. Phone ``#777``.

DNS to IP address.

==================

::

  $ nslookup example.com

IP to DNS address.

==================

::

  $ nslookup 192.168.1.1

NetBIOS to IP address.

======================

By nbtstat.exe command from MS you can print NetBIOS name cache with

name-to-IP address mappings::

  $ nbtstat -c

List of NetBIOS name.

=====================

::

  $ nbtstat -r

List of open ports.

===================

List of open ports under Windows.

---------------------------------

::

  cmd> netstat        # with DNS name resolution, TCP only

  cmd> netstat -n     # without name resolution, TCP only

  cmd> netstat -a -n  # TCP and UDP

  cmd> netstat -s     # show IP, ICMP, TCP, and UDP statistics.

List of open ports under Linux.

-------------------------------

-t tcp, -u udp, -l local, -p process::

  $ sudo netstat -tulp

or to use port number instead of protocol name::

  $ sudo netstat -tulpn

Which processes open port?

==========================

Windows

-------

::

  cmd> netstat -o     # show PID

  cmd> netstat -b     # show also cmd name

  cmd> netstat -b -v  # show all modules (.exe and .dll) with full path

Linux.

------

::

  $ sudo netstat -tulpn

or::

  $ sudo lsof -i

How disable IPv6?

=================

Debian kernel 2.6/Ubuntu ("official" method)/Fedora Core.

---------------------------------------------------------

Comment in /etc/modprobe.d/aliases "alias net-pf-10 ipv6" and add alias

"net-pf-10 off", "alias ipv6 off"::

  $ sudo emacs /etc/modprobe.d/aliases

  ...

  $ cat /etc/modprobe.d/aliases

  ...

  # alias net-pf-10 ipv6

  alias net-pf-10 off

  alias ipv6 off

  ...

Reboot or::

  $ sudo update-modules

Another way is adding to /etc/modprobe.d/blacklist.local lines::

  blacklist ipv6

You can safely wipe out any IPv6 reference in ``/etc/hosts`` and

``/etc/network/interfaces``.

  http://wiki.debian.org/DebianIPv6

                DebianIPv6

RHEL4/Centos4.

--------------

As for Debian, but ``/etc/modprobe.d/aliases`` has name ``/etc/modprobe.conf``.

KDE.

----

::

  $ cat /etc/environment

  ...

  KDE_NO_IPV6=true

  ...

Firefox.

--------

See ``about:config`` page, set ``network.dns.disableIPv6`` to ``true``.

Clear saved Windows networking passwords.

=========================================

::

  cmd> rundll32.exe keymgr.dll, KRShowKeyMgr

  cmd> control userpasswords2                 # another way

Proxy auto-config.

==================

  http://en.wikipedia.org/wiki/Proxy_auto-config