A simple comparison of the nslookup command, the Microsoft DNS tool, and dig, the linux/win based command alternative.
Prepare debian system, guide notes that it have to be lenny 64bit, first problem, installation did not work on lenny and latest sipwise provider require 6.x version of debian (squeeze), otherwise your installation will not be sucesfull. OS install without X win and other sw (use netinstall iso for example) with basic configuration.
Ngrep is an intersting tool which may be used for SIP real time analysis. It is usable to capture SIP Messages which are flowing on/from of our SIP server.
Installation is straightforward, directly debian repository:
TCPdump is a powerful command-line packet analyzer, which may be used for a SIP message sniffing/analyzing. TCPdump is preinstalled on many linux distributions, or may be installed directly from debian repository:
apt-get install tcpdump
TCPdump allows write sniff to a file or display it realtime. Its usage for SIP message analysis may look like:
Ipgrab is an network protocol grab utility which may be used for a SIP message sniffing/analyzing. Ipgrab may be installed directly from debian repository:
apt-get install ipgrab
The usage for SIP message analysis may look like
This guide describes installing of debian linux OS on a computer with Windows 7 system preinstalled. System will use grub2 as the system loader with predefined win7 boot option.
Steps required to do:
1) create a free space on your HDD, that you have space to install debian OS. You may use built in windows disk management tool to resize win partion (left click on start button, then right click on computer, choose manage, then choose disk management). There should be a frees space, like it is shown on the picture:
The article describes how to add simple database support for the Kamailio 3.1.0 server. As the database ext files are used. Activities described here are following the basic Kamailio server installation, described in the article Installing Kamailio 3.1 on debian lenny.
We are trying this as the part of our performance tests.