Membangun Server VPN di GNU/Linux Ubuntu 16.04 dengan pptp

Membangun Server VPN di GNU/Linux Ubuntu 16.04 dengan pptp

(Gambar thumbnail diambil dari freevpnservers.com)

Apa itu VPN ?. VPN merupakan singkatan dari Virtual Private Network. Ada baiknya jika ingin membaca dan mengetahui secara detil teori pada VPN bisa cek mencari pada link berikut duckduckgo.com. Sekilas melihat sudah cukup banyak pembahasan dan pengertian dari VPN. Jika ingin lebih detil lagi maka membaca RFC dari VPN dari IETF merupakan salah satu jalan untuk memahaminya. Mari kita tengok lebih lanjut.

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Mengenal dpkt (Bagian 1): Membaca Berkas pcap

Mengenal dpkt (Bagian 1): Membaca Berkas pcap

Tulisan ringkas berikut disarikan dari beberapa sumber yang ada. Salah satunya dari blog milik Jon Oberheide. Karena penelitian saya berkaitan dengan keamanan jaringan maka analisis dari network traffic menjadi sebuah keharusan. dpkt adalah pustaka yang dibuat oleh Dug Song. Beliau seingat saya salah satu anggota dari monkey.org dan sudah membuat beberapa perangkat lunak yang berkaitan dengan jaringan. Di artikel ini saya coba paparkan sedikit cara menggunakan pustaka dpkt secara ringkas. Dokumentasi dan cara sudah banyak bertebaran dalam bahasa Inggris sedangkan untuk bahasa Indonesia belum ada atau masih jarang silakan cek di duckduckgo. Selanjutnya saya mencoba berkontribusi dalam bahasa Indonesia.

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Renew Letsencrypt for FreeBSD 10.2

Renew Letsencrypt for FreeBSD 10.2

Letsencrypt sent me an email said that my certificate will expire in 19 days. So if you using FreeBSD 10.2 here is the fastest way to make it work. Before execute this steps please check it your FreeBSD ports. The letsencrypt port reside in security/letskencrypt or security/py27-letsencrypt. The first one doesn’t exist even after I update my ports so I try the second one. But it seems the code still error. If this two ports is not working try this steps.

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Resolve aclocal is missing

Resolve aclocal is missing

If you ever build package from a tarball then maybe you can find sometimes there is another part is missing. One of them is aclocal. This program is a part of GNU Automake package. The error message from bash shell is like this:

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MySQL Server 5.7 Startup Problem on FreeBSD 10.2

MySQL Server 5.7 Startup Problem on FreeBSD 10.2

I’ve just installed MySQL server 5.7 for FreeBSD 10.2 using pkg package manager. It seems the problem occur when I want to start the MySQL for the first time. This time I’m using the real VPS server and not VirtualBox. The error is : /usr/local/etc/rc.d/mysql-server: WARNING: failed precmd routine for mysql. Here is what happen to my VPS server.

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Change Desktop Environment and XTerm Configuration

Change Desktop Environment and XTerm Configuration

After upgrading my Ubuntu from 12.04 to 14.04, I had a problem with the desktop environment. Oh by the way, I’m using VirtualBox with newest version. So Ubuntu 12.04 said if I insist upgrading to 14.04 then you will have desktop problem. Nothing to lose so I accept the upgrade then it goes around until finished with the upgrade then reboot the Ubuntu.

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Resolve pip for Python 3.4 on FreeBSD

Resolve pip for Python 3.4 on FreeBSD

This just newbie problem. I had FreeBSD version 10.2 server. The default installation for python is python 2.7. I had script with python 3 as the interpreter so I install the python 3 from the pkg using

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How To Parse Website (2)

How To Parse Website (2)

My late post How to Parse Website Part 1 has shown you the basic website parsing. Next in this post I will show you more. Open your python command line again then try parse our last website. Here is the result from website I’ve been parse accessed via browser.

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How To Parse Website (1)

How To Parse Website (1)

In this post I will guide you step by step to parse website. I chose python, though. Each language has its own style but I prefer python because I know its strength and its resilient. Maybe some other time I can try another language as an example. This post will not show you how to install python.

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Android Play Store Background Data Disabled

Android Play Store Background Data Disabled

I have been using custom rom for my Galaxy Grand Duos for quite some time. Around two years maybe. If you are asking why then it’s because the vendor does not release next official rom for my Galaxy Grand Duos and another reason is my Grand Duos growing slower and slower. Okay here is my custom rom provided by Cyanogenmod. This is cyanogenmod unofficial version for Galaxy Grand Duos (Device Model : GT-I9802). Android version 5.0.2.

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New Challenge : Yii Framework

New Challenge : Yii Framework

After many years developing using Zend Framework (version 1.x), now we have new challenge. We had a client requesting new framework to develop, Yii Framework. What is Yii Framework ? and what is the difference between Zend and Yii. You can find any articles and many in the internet about Yii. This one article just show you my first experience using our first framework before using Yii Framework, that’s all.

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MySQL Import Error : Access Denied

MySQL Import Error : Access Denied

Sometimes, an error occurred when you try to import mysql database after exporting from cpanel. I’m not searching thoroughly the cause but the problem is mysql cannot create VIEW or any STORE PROCEDURE because there is a flag command we’ve been using. Should you find this script in your VIEW or PROCEDURE :

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