Adding a sudoer to use sudo on Debian
Sudo allows a system administrator to delegate authority to give certain users (or groups of users) the ability to run some (or all) commands as root or another user while providing an audit trail of the commands and their arguments.
1. Create a new user (optional)
adduser user1
Installing Dovecot IMAP and POP daemon with MySql backend
Dovecot is an open source IMAP and POP3 server for Linux/UNIX-like systems, written primarily with security in mind. Dovecot primarily aims to be a lightweight, fast and easy to set up open source mailserver.
It's assumed that you have already installed and configured Postfix according to this tutorial:
Installing Postfix with MySql backend and SASL for SMTP authentication
1. Install required packages
apt-get install dovecot-imapd dovecot-pop3d
Installing Courier POP3 and IMAP daemon with MySql backend
The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open commodity protocols, such as ESMTP, IMAP, POP3, LDAP, SSL, and HTTP. Courier provides ESMTP, IMAP, POP3, webmail, and mailing list services within a single, consistent, framework. In this tutorial we'll only use the Courier POP3 and IMAP services.
It's assumed that you have already installed and configured Postfix according to this tutorial: Installing Postfix with MySql backend and SASL for SMTP authentication
1. Install required packages
apt-get install courier-authdaemon courier-authlib-mysql courier-pop courier-pop-ssl courier-imap courier-imap-ssl
Installing Postfix with MySql backend and SASL for SMTP authentication
Postfix is a free and open source mail transfer agent (MTA). It is intended as a fast, easy-to-administer, and secure alternative to the widely-used Sendmail MTA.
Install and configure Postfix
1. Install Postfix and SASL
apt-get install postfix postfix-mysql libsasl2-modules-sql sasl2-bin libsasl2-2 postfix-tls libpam-mysql
> Internet Site
> host.domain.com
Automated backups to FTP server using rsync and curlftpfs
Using curlftpfs and FUSE, a ftp site is mapped to the local file system and rsync will backup files to the ftp server automatically.
1. Install required packages
apt-get install curlftpfs rsync
Securing unencrypted traffic with stunnel
Stunnel can be used to provide secure encrypted connections for clients or servers that do not speak TLS or SSL natively. In this tutorial we'll secure Samba connection but you could use this for other services like SMTP, IMAP, POP3 etc.
If you are securing a service where the client supports encrypting like SMTP, IMAP and POP3 you can skip the client step.
Server
1. Install stunnel
apt-get install stunnel
Installing and configuring Samba
Samba is a free software re-implementation of SMB/CIFS networking protocol providing file and print services for various Microsoft Windows clients and can integrate with a Windows Server domain, either as a Primary Domain Controller (PDC) or as a domain member. It can also be part of an Active Directory domain.
1. Install the base packages
apt-get install samba
> WORKGROUP (Type the workgroup you would like to use here)
> No
MySql database replication (master/slave)
In this tutorial we'll create a simple one-way master/slave database replication. You must have at least one master and one slave but you can use multiple slaves.
Master
1. Configure master to listen on all ip addresses (pico /etc/mysql/my.cnf)
#bind-address = 127.0.0.1
Port forwarding with iptables
In this tutorial we'll set up a simple port forwarding (NAT) using iptables.
1. Enable ip forward
echo "1" > /proc/sys/net/ipv4/ip_forward
Installing ntop network monitoring tool
ntop is a network traffic probe that shows the network usage, similar to what the popular top Unix command does. ntop is based on libpcap and it has been written in a portable way in order to virtually run on every Unix platform and on Win32 as well.
ntop users can use a a web browser (e.g. netscape) to navigate through ntop (that acts as a web server) traffic information and get a dump of the network status. In the latter case, ntop can be seen as a simple RMON-like agent with an embedded web interface.
1. Install required packages
apt-get install ntop
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- Add a sudoer (user allowed to use sudo)