BOM: NTP Server

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<span style="font-family: Georgia, Times New Roman, serif; font-size: x-large;"><span style="color: blue;"><a href="http://bombuster42.blogspot.com/2015/04/ntp-server.html"><span style="background-color: white;">NTP SERVER</span><span style="background-color: white;"> </span></a></span><span style="background-color: white; color: #555555;">  </span></span><span style="background-color: white; color: #555555; font-family: Verdana, sans-serif; font-size: 9pt;">      <div class="separator" style="clear: both; text-align: center;">
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NTP server atau yang lebih dikenal dengan Network Time Protocol adalah aplikasi layanan dari server untuk melakukan sinkronisasi waktu dengan client-clientnya. sehingga time yang ada di sebuah jaringan adalah sama dan seragam.</span></h2>
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<span style="background-color: white;"><span id="more-53"></span><span style="color: #555555; font-family: Verdana, sans-serif; font-size: 9pt;">NTP Server yang akan saya paparkan disini adalah NTP server yang bersifat lokal. artinya sinkronisasi NTP dilakukan secara lokal dan tanpa koneksi internet.</span></span></div>
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<span style="background-color: white; color: #555555; font-family: Verdana, sans-serif; font-size: 9pt;">1. Pertama kita instal terlebih dahulu paket NTP nya</span></div>
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<span style="background-color: white;"><b style="color: red;"><span style="font-family: Verdana, sans-serif; font-size: 9pt;">#apt-get install ntpdate ntp-server</span></b><span style="color: #555555; font-family: Verdana, sans-serif; font-size: 9pt;"></span></span></div>
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<span style="background-color: white; color: #555555; font-family: Verdana, sans-serif; font-size: 9pt;">2. Edit file paketnya dengan mengetikkan perintah</span></div>
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<span style="background-color: white;"><b style="color: red;"><span style="font-family: Verdana, sans-serif; font-size: 9pt;">#nano /etc/ntp.conf</span></b><span style="color: #555555; font-family: Verdana, sans-serif; font-size: 9pt;"></span></span></div>
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<span style="background-color: white; color: #555555; font-family: Verdana, sans-serif; font-size: 9pt;">3. Edit sperti di bawah ini</span></div>
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<span style="background-color: white; color: #555555; font-family: Verdana, sans-serif; font-size: 9pt;">Cari <b>Please consider joining the pool</b><span class="apple-converted-space"> </span>setelah ketemu tambahkan persis dibawah ini</span></div>
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<span style="background-color: white; color: #555555; font-family: Verdana, sans-serif; font-size: 9pt;">#server 0.debian.pool.ntp.org iburst<br />#server 1.debian.pool.ntp.org iburst<br />#server 2.debian.pool.ntp.org iburst<br />#server 3.debian.pool.ntp.org iburst<br />#server 192.168.7.1 # local clock<br />#fudge 192.168.7.1<br /><b style="color: red;">server</b><span class="apple-converted-space" style="color: red;"><b> </b></span><b style="color: red;"><u>127.127.1.0</u></b><span class="apple-converted-space" style="color: red;"><b> </b></span><b style="color: red;">#local clock</b><br style="color: red;" /><span style="color: red;"></span><b style="color: red;">fudge</b><span class="apple-converted-space" style="color: red;"><b> </b></span><b style="color: red;"><u>127.127.1.0</u></b><span class="apple-converted-space" style="color: red;"><b> </b></span><b style="color: red;">stratum 10</b></span></div>
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<span style="background-color: white; color: #555555; font-family: Verdana, sans-serif; font-size: 9pt;">Ganti IP 127.127.1.0 dengan lokal yang akan kita pakai acuan time server, Kemudian edit lagi dengan menambahkan tanda #</span></div>
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<span style="background-color: white; color: #555555; font-family: Verdana, sans-serif; font-size: 9pt;"># By default, exchange time with everybody, but don’t allow configuration.<br /># See /usr/share/doc/ntp-doc/html/accopt.html for details.<br /><b style="color: red;"><u>#</u></b><b style="color: red;">restrict -4 default kod notrap nomodify nopeer noquery</b><br /><b style="color: red;"><u>#</u></b><b style="color: red;">restrict -6 default kod notrap nomodify nopeer noquery</b></span></div>
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<span style="background-color: white; color: #555555; font-family: Verdana, sans-serif; font-size: 9pt;">Lanjut lagi edit, tambahkan alamat network yang akan kita pakai pada network kita. apabila hanya menggunakan 1 network, buat seperti dibawah. namun apabila menggunakan 2 atau lebih, masukkan alamat network pada baris dibawahnya.</span></div>
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<span style="background-color: white; color: #555555; font-family: Verdana, sans-serif; font-size: 9pt;"># Clients from this (example!) subnet have unlimited access,<br /># but only if cryptographically authenticated<br />#restrict 192.168.123.0 mask 255.255.255.0 notrust<br /><b style="color: red;">restrict 192.168.7.0 mask 255.255.255.248 nomodify notrap</b></span></div>
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<span style="background-color: white; color: #555555; font-family: Verdana, sans-serif; font-size: 9pt;">4. Simpan dan cek service dari NTP:</span></div>
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<span style="background-color: white;"><b style="color: red;"><span style="font-family: Verdana, sans-serif; font-size: 9pt;">#ntpq- p</span></b><span style="color: #555555; font-family: Verdana, sans-serif; font-size: 9pt;"></span></span></div>
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<span style="background-color: white; color: #555555; font-family: Verdana, sans-serif; font-size: 9pt;">jika sudah ada output dari service tersebut (output local), berarti service NTP telah berjalan.</span></div>
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<span style="background-color: white; color: #555555; font-family: Verdana, sans-serif; font-size: 9pt;">5. Sinkronisasikan dengan ntp server lokal</span></div>
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<span style="background-color: white;"><b style="color: red;"><span style="font-family: Verdana, sans-serif; font-size: 9pt;">#ntpdate -u 127.0.0.1 (IP localhost)</span></b><span style="color: #555555; font-family: Verdana, sans-serif; font-size: 9pt;"></span></span></div>
<span style="background-color: white; color: #555555; font-family: Verdana, sans-serif; font-size: 9pt; line-height: 16.6399993896484px;">Cat : terkadang kita memang memerlukan waktu agar clock server local menjadi stabil, jadi mungkin saat sinkronisasi pertama, akan keluar output “no server suitable ….”. jika memang demikian, tunggu 10-15 menit dan ulangi lagi langkah nomor 5.</span>

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NTP SERVER NTP server atau yang lebih dikenal dengan Network Time Protocol adalah aplikasi layanan dari server untuk melakuk...

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