To install proftpd server

apt-get install proftpd

While installing there is a option to choose the type of installation, whether it is standalone or inetd installation, normally we need standalone installation, After installation the server will start automatically.

To start ftp server

/etc/init.d/proftpd start

To stop ftp server

/etc/init.d/proftpd stop

Now we will go through configuration of ftp server
proftpd configuration file is located at /etc/proftpd/proftpd.conf
To edit configuration use

vi /etc/proftpd/proftpd.conf

Default configuration file can be found here

By default proftpd will give access to the home path (to know home directory of users cat /etc/passwd)

DefaultRoot ~

// This will limit the user smanne to /var/www/ folder
DefaultRoot /var/www/ smanne

To change default file permissions

// this will give default 755 permission to all the new and updated files
Umask                           022  022 

// this will give 775 permission,
Umask 			      002  002

You can also change the port number, max connections,

For more proftpd configurations refer – http://www.proftpd.org/docs/example-conf.html

http://www.howtoforge.com/mysql_database_replication

This article contains simple copy & paste steps to configure MySql replication, if you need more detailed indepth explanation on different configuration settings then go to

http://dev.mysql.com/doc/refman/5.0/en/replication.html

We need apache, nginx to work with this tutorial
To install nginx on debian please follow this link

http://timothybowler.com/2009/11/25/compiling-nginx-on-debian-lenny/

Note: Dont install using aptitude it contains older version where gzip and proxy module not available,

Modify apache ports.conf to run apache on port 8080

Add this lines to default site of nginx

server {
listen 80;
server_name debianzone.com;
location / {
proxy_pass http://debianzone.com:8080;
proxy_cache debianzone-cache;
proxy_cache_valid  200 302  60m;
proxy_cache_valid  404      1m;
}
} 

Add this in http section of nginx.conf

http {
proxy_cache_path  /var/www/cache levels=1:2 keys_zone=debianzone-cache:8m max_size=1000m inactive=600m;
proxy_temp_path /var/www/cache/tmp;
}

/bin/hostname your-host-name

To change the host name permanently use

/etc/hostname
/etc/init.d/hostname.sh start

For new installation:

Update aptitude sources

vi /etc/apt/sources.list

and add this lines

• deb http://ppa.launchpad.net/ubuntu-mobile/ppa/ubuntu jaunty main

• deb-src http://ppa.launchpad.net/ubuntu-mobile/ppa/ubuntu jaunty main

Then

apt-get update
apt-get install xserver-xorg-video-psb

For people facing problem with display after updating kernel use this

sudo dpkg-reconfigure psb-kernel-source

What is SSL?
SSL (Secure Socket Layer) is a protocol used for secure data transfer. This is done by using private keys and certificates. A private key is used to encrypt the data which you are sending and the server can only decrypt this data with the private key available with it, A certificate is used to authentic yourself before proceeding.
So we need two things to make our website secure for online transactions. In this article i will explain how to generate a private key, certificate request with open-ssl and apache, get certificate from CA (Certificate Authority), configure your server to respond for ssl requests.

Different types of certificates
Before going to configuration I will explain about the different types of certificates available in the market and when to use which. The certificates are mainly divided into High Assurance and Low Assurance, High assurance is needed for sites dealing with financial transactions, low assurance is needed for internal corporate networks or small websites and mainly used for secure login to site and sending sensitive documents securely.
Remember every byte you are sending through http protocol means non-ssl layer can be seen or accessed by anyone.

Configuration:

I used Apache 2, Debian Linux, Openssl for this configuration.
First step is to install Apache:
Go to console mode

aptitude install apache2

next install openssl to generate keys and certificates or certificate requests

aptitude install openssl

next generate certificate request and key using openssl

openssl req -new -nodes -keyout linuxforu.key -out linuxforu.csr

Here you want to fill up details like Country code, State, City, Company name, the most important thing is common name, it must be same as your website name (suppose you website is www.linuxforu.com then the common name must be linuxforu.com). This will generate two files in your directory one is a private key file (myserver.key) and another one is certificate request file (myserver.csr)
Now you need to get a certificate from some certificate vendors like verisign or comodo or anyother of your choice. The certificate request which we already generated is used to get this the certificate vendors will ask you to paste the certificate request. Comodo is providing a free trail certificate which is valid for 3 months. (Comodo Free Trail). Remember every certificate has some validity after that if we use the same certificate browser will through security error.

After getting the certificates you want to enable ssl module in apache and configure it

a2enmod ssl
vi /etc/apache2/sites-available/default

ServerName linuxforu
DocumentRoot /var/www/
SSLEngine On
SSLCertificateFile /etc/apache2/ssl/linuxforu.cert
SSLCertificateKeyFile /etc/apache2/ssl/linuxforu.key

Options Indexes FollowSymLinks
AllowOverride All
Order deny,allow
Allow from all

Then restart your server

/etc/init.d/apache2 restart

We all know that a default http request will be sent to port 80, in the same way default https request will be forwarded to port 443 so we configured the server for listening 443 port.
You are done now access your website with https://server.com
If you face any problems you want to check this things first
Whether the server is hearing port 443 or not to find this type

lsof -i tcp:443

Next check whether your port 443 is forwarded or not. If you face any new problems other than this please post a comment and we will try to solve it.