Parapat Notes

Synopsis: This documentation assumes that you have installed and have a working version of syslog-ng version 1.5.x and higher. This documentation assumes that you have installed and have a working version of mysql database. What is syslog-ng? Syslog-ng is the world's most flexible and scalable audit trail processing tool for organizations of any size. It provides a centralised, securely stored log of all devices on your network, whatever platform they run on. And syslog-ng also incorporates a host of powerful features, including filtering based on message content, as well as customisable data mining and analysis capabilities. syslog-ng comes as part of the Zorp product line or can be downloaded (( click here )) as a drop-in replacement for stock UNIX system logging software. What is mysql MySQL is an open source relational database management system (RDBMS) that uses Structured Query Language (SQL), the most popular language for adding, accessing, and processing data in a database....

This is an example for mobile HSDPA modem which use USB connection. In this configuration, i use IndosatM2 as internet provider. And it used as a APN name. And will dial to *99# according to indosatm2 configuration. #################################### [Dialer Defaults] Init1 = ATZ Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 Ask Password = 1 Phone = *99# APN = indosatm2 Idle Seconds = 300 Modem Type = Analog Modem Stupid Mode = 1 Compuserve = 0 Baud = 9600 Auto DNS = 1 Dial Command = ATDT modem = /dev/ttyUSB0 ISDN = 0 Username = type your username here ##################################### And you'll prompt to insert a password with no shown you for what character you input.

OSI (Open System Interconnection) OSI adalah suatu dekripsi abstrak mengenai desain lapisan-lapisan komunikasi dan protokol jaringan komputer yang dikembangkan sebagai bagian dari inisiatif Open Systems Interconnection (OSI). Model ini disebut juga dengan model “Tujuh lapisan OSI” (OSI seven layer model). Ketujuh lapisan dalam model ini adalah: 1. Lapisan fisik (physical layer) Physical Layer berfungsi dalam pengiriman raw bit ke channel komunikasi. Masalah desain yang harus diperhatikan disini adalah memastikan bahwa bila satu sisi mengirim data 1 bit, data tersebut harus diterima oleh sisi lainnya sebagai 1 bit pula, dan bukan 0 bit. Pertanyaan yang timbul dalam hal ini adalah : berapa volt yang perlu digunakan untuk menyatakan nilai 1? dan berapa volt pula yang diperlukan untuk angka 0?. Diperlukan berapa mikrosekon suatu bit akan habis? Apakah transmisi dapat diproses secara simultan pada kedua arahnya? Berapa jumlah pin yang dimiliki jaringan dan apa kegunaan masing-masing pin?...