Govind Kumar govind0229

Capturing SIP and RTP traffic using TcpDump

Tcpdump is a command-line packet analyzer, It has a lot of cool features to capture the network traffic. Let’s see the command to capture the SIP and RTP traffic using the Tcpdump.

Capturing only SIP traffic using the Tcpdump:

 tcpdump -i any -n -s 0 port 5060 -vvv -w /tmp/capture_file_name.pcap

Installing FreeSWITCH 1.10.5 on Ubuntu 18.04 | Ubuntu 20.04 LTS

Introduction

FreeSWITCH is a software defined telecom stack that runs on any commodity hardware. FreeSWITCH can handle voice, video and text communication and support all popullar VoIP protocols. FreeSWITCH is flexible and modular, and can be used in any way you can imagine

This guide demonstrates how to get it install FreeSWITCH and get it up and running on a Ubuntu 20.04 LTS machine

Prerequisites

To follow along with this guide, you need one Ubuntu 20.04 LTS server which has prerequisite packages installed and configured. In order to install required packages issue following command

Based on https://techwombat.com/enable-http2-apache-ubuntu-16-04/
This totorial is for an older Ubuntu 16.04, for a Ubuntu 18.04 please read here --> https://gist.github.com/GAS85/8dadbcb3c9a7ecbcb6705530c1252831 and for a Ubuntu 20.04 please read here* --> https://gist.github.com/GAS85/38eb5954a27d64ae9ac17d01bfe9898c

Requirements

A self-managed VPS or dedicated server with Ubuntu 16.04 running Apache 2.4.xx.
For Ubuntu 18.04 please read here --> https://gist.github.com/GAS85/8dadbcb3c9a7ecbcb6705530c1252831
A registered domain name with working HTTPS (TLS/SSL). HTTP/2 only works alongside HTTPS because most browsers, including Firefox and Chrome, don’t support HTTP/2 in cleartext (non-TLS) mode.

How To Replace Faulty harddisk into software raid 1

General info.

How to Install Varnish + Hitch Cache for Apache on CentOS/RHEL8

Varnish Cache is a free open source, modern and high-performance web application accelerator. It is a fast reverse HTTP proxy that caches content to speed up your web server performance, by storing web content in server memory – in a cache. It is configured to run in front of an origin server such as Apache (HTTPD) webserver.

Step 1: Installing Apache Web Server.

Resize root partition (or how to delete the default /home partition) on CentOS 8 through SSH

This requires you to be able to ssh into the instance using the root user account and that no services be running as users out of /home on the target machine.

The examples are from a default installation with no customation-you NEED to know what you're working with for volumes/partitions to not horribly break things.

By default, CentOS 8 uses XFS for the file system and Logical Volume Manager (LVM), creating 3 partitions: /,/home and /boot

Step 1 - Copy /home Contents

To backup the contents of /home, do the following:

Postgresql

Bash psql -U postgres -c 'SHOW config_file' psql -U postgres -c 'SHOW config_file' psql -U postgres -c 'SHOW max_connections' `bash

systemctl restart postgresql-12.service

`

Compare remote server file using ssh commands

# ssh user@remote-host "cat /home/root/file_remote" | diff  - file_local 

# ssh -P<port> -l root <remote server ip> "cat  /home/root/file_remote" | diff - /home/root/local_server_file
enter password

	> 
		diff will
	&lt;

	#!/usr/bin/env bash
	# -------------------------------------------------
	# Infiworx Docker Project
	# Govind Kumar < [email protected]>
	# -------------------------------------------------
	set -o nounset

	cd /usr/local/src/

	echo "dowloading python latest version"

	while true; do
	read -p "If you already have compiled FreeSWITCH you will need to manually edit the configure file to set enable_core_odbc_support=yes, are you sure you want to continue? (y/n)" yn
	case $yn in
	[Yy]* ) break;;
	[Nn]* ) exit;;
	* ) echo "Please answer yes to continue to installing ODBC and compiling FreeSWITCH, answer no to abort this process.";;
	esac
	done

	yum -y install unixODBC-devel mysql-connector-odbc