net.rst
changeset 1120 bb1d825da953
parent 1119 fd5d841f7273
child 1121 c7cfa384c05c
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1119:fd5d841f7273 1120:bb1d825da953
     1 -*- mode: outline; coding: utf-8; -*-
       
     2 
       
     3 * Ukraine internet provider.
       
     4 
       
     5 ** Utel.
       
     6 
       
     7 User - none, password - none, phone - '*99***1#' or '*99#'.
       
     8 
       
     9 ** Peoplenet.
       
    10 
       
    11 User and password you get by sending SMS message to '920' number. Phone '#777'.
       
    12 
       
    13 * DNS to IP address.
       
    14 
       
    15   $ nslookup example.com
       
    16 
       
    17 * IP to DNS address.
       
    18 
       
    19   $ nslookup 192.168.1.1
       
    20 
       
    21 * NetBIOS to IP address.
       
    22 
       
    23 By nbtstat.exe command from MS you can print NetBIOS name cache with
       
    24 name-to-IP address mappings:
       
    25 
       
    26   $ nbtstat -c
       
    27 
       
    28 * List of NetBIOS name.
       
    29 
       
    30   $ nbtstat -r
       
    31 
       
    32 * List of open ports.
       
    33 
       
    34 ** Windows.
       
    35 
       
    36   cmd> netstat        # with DNS name resolution, TCP only
       
    37   cmd> netstat -n     # without name resolution, TCP only
       
    38   cmd> netstat -a -n  # TCP and UDP
       
    39   cmd> netstat -s     # show IP, ICMP, TCP, and UDP statistics.
       
    40 
       
    41 ** Linux.
       
    42 
       
    43   $ netstat
       
    44 
       
    45 * Which processes open port?
       
    46 
       
    47 ** Windows
       
    48 
       
    49   cmd> netstat -o     # show PID
       
    50   cmd> netstat -b     # show also cmd name
       
    51   cmd> netstat -b -v  # show all modules (.exe and .dll) with full path
       
    52 
       
    53 * How disable IPv6?
       
    54 
       
    55 ** Debian kernel 2.6/Ubuntu ("official" method)/Fedora Core.
       
    56 
       
    57 Comment in /etc/modprobe.d/aliases "alias net-pf-10 ipv6" and add alias
       
    58 "net-pf-10 off", "alias ipv6 off":
       
    59 
       
    60   $ sudo emacs /etc/modprobe.d/aliases
       
    61 ...
       
    62   $ cat /etc/modprobe.d/aliases
       
    63 ...
       
    64 # alias net-pf-10 ipv6
       
    65 alias net-pf-10 off
       
    66 alias ipv6 off
       
    67 ...
       
    68 
       
    69 Reboot or
       
    70 
       
    71   $ sudo update-modules
       
    72 
       
    73 Another way is adding to /etc/modprobe.d/blacklist.local lines
       
    74 
       
    75   blacklist ipv6
       
    76 
       
    77 You can safely wipe out any IPv6 reference in "/etc/hosts" and
       
    78 "/etc/network/interfaces".
       
    79 
       
    80 ** RHEL4/Centos4.
       
    81 
       
    82 As for Debian, but "/etc/modprobe.d/aliases" has name "/etc/modprobe.conf".
       
    83 
       
    84 ** KDE.
       
    85 
       
    86   $ cat /etc/environment
       
    87 ...
       
    88 KDE_NO_IPV6=true
       
    89 ...
       
    90 
       
    91 ** Firefox.
       
    92 
       
    93 See about:config page, set "network.dns.disableIPv6" to "true".
       
    94 
       
    95 * Windows.
       
    96 
       
    97 ** Clear saved Windows networking passwords.
       
    98 
       
    99   cmd> rundll32.exe keymgr.dll, KRShowKeyMgr
       
   100   cmd> control userpasswords2                 # another way
       
   101 
       
   102 * Proxy auto-config.
       
   103 
       
   104   http://en.wikipedia.org/wiki/Proxy_auto-config
       
   105