Unix, FreeBsd, Linux News
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14 April, 2005: Blog Vesion of UnixCities started. Now you can register the accounts, post the articles, make comments and more ...
30 March, 2004:
MySql manual pages added. We have added the MySql manual and tutorial pages.
Now you can find all useful information here.
8 September, 2003:
Unix tutorial for beginners page started. We have started the unix tutorial page. Now our visitors
can post the most useful notes here.
9 August, 2003: UnixCities message board opened. Now you can post your questions and suggestions.
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9 June, 2003: FreeBSD 5.1-RELEASE is now available. Please see the Release Information page for more details.
3 April, 2003: FreeBSD 4.8-RELEASE has been released. Please see the Release Information page for more details.
15 March, 2003: The January-February status report is now available; see the status reports Web page for more information.
Unix tutorial. Linux and FreeBsd help
30 March, 2004: MySql Manual. Tutorial Introduction
This chapter provides a tutorial introduction to MySQL by showing how to use the mysql client program to
create and use a simple database. mysql (sometimes referred to as the ``terminal monitor'' or just ``monitor'')
is an interactive program that allows you to connect to a MySQL server, run queries, and view the results. mysql
may also be used in batch mode: you place your queries in a file beforehand, then tell mysql to execute the
contents of the file. Both ways of using mysql are covered here ...
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22 January, 2004: Backing Up Your MySQL Databases With MySQLDump on FreeBsd or Linux
MySQL includes several ways to backup your important data. In this article Mitchell shows
us how to backup our databases using the mysqldump utility that comes with MySQL. He looks at
several examples including how to backup your database to a file, another server, and even a
compressed gzip file ...
18 November, 2003: The .htaccess notes. Hotlink protection, Time Based Redirection, Cookie Password Protection
This htaccess script will protect you from hotlinking. Once you upload the htaccess file, then in hotlink.html just put the ...
20 October, 2003: Adding more SWAP space
Here's the procedure for adding 512 MB of swap space ...
15 October, 2003: Installing and configuring sudo
Sudo (Super User Do) is a very useful program that allows a system administrator to give certain users the ability to run some (or all) commands as root
09 October, 2003: UNIX permissions and chmod tutorial
A UNIX system serves many users. Users are an
abstraction that denotes a logical entity for assignment of ownership and operation privileges over the system ...
01 October, 2003: Smurf Attack, Fraggle Attack, Spoofing, SYN Attack definition
When a perpetrator sends a large number of ICMP echo (ping) traffic at IP
broadcast addresses, using a fake source address ...
29 September, 2003: Using the FreeBSD Boot Loader
The FreeBSD boot third stage bootstrap loader (loader(8)) loads the kernel and various
types of modules including splash screens, screen savers, networking drivers, etc ...
20 September, 2003: Setting Up disk quota on FreeBsd
The quotas used to restrict the disk space for system users. It will be useful in case if
you have not enough free disk space on your server and etc ...
19 September, 2003: Adduser and rmuser unix commands. How to add and remove FreeBsd users
This tutorial will help to manage the system users on your server. We will show how to add and remove system users
by means the adduser and rmuser unix commands ...
|The most useful unix tutorials
18 September, 2003: Setting Up Server / Client kerberos on OpenBsd
As a user/administrator of OpenBSD systems, you are fortunate that Kerberos IV is an pre-installed
component of the default system. Here is a guide to setting up both the Kerberos realm server,
as well as a client ...
17 September, 2003: Setting Up Oracle on Linux or FreeBsd
This little tutorial will explain you the basic steps regarding installing the Oracle on Linux or FreeBsd ...
16 September, 2003: Dos attack on Unix. Apache, ping, flood, ftp dos attacks definition and prevention
The purpose of this document is to strengthen the UNIX IP stack against a variety of attack types
prevalent on the Internet today. You can find the basic tutorials about Apache, ping, flood, ftp dos attacks definition and prevention...
15 September, 2003: Setting Up Socks4 and Socks5 server on Linux or FreeBsd
This tutorial will show you how to set up a secure SOCKS proxy server.
The SOCKS proxy server available from http://www.socks.nec.com/...
08 September, 2003: Unix tutorial for beginners
Here you can find the unix tutorials posted by our visitors. We will collect
the most useful FreeBsd and Linux tutorials on this page ...
07 September, 2003: Unix commands overview
Here you can find the basic Unix commands. This page are designed for Unix beginners mainly. Every Unix command or filename is case sensitive, unlike DOS ...
07 September, 2003: Setting Up Linux Firewall
To build a Linux IP firewall, it is necessary to have a kernel built with IP firewall support and the appropriate configuration utility ...
06 September, 2003: Linux Firewall and IP Masquerading
We dug up an old 486. Yep, a 486. I installed RedHat Linux 6.0. We put in two NICs. I recompiled the kernel to make it smaller while enabling firewall and IP masquerading ...
04 September, 2003: QMail Spam & Virus checking and prevention
Spamassassin is program that scans email messages using a set of rules, and then assigns a score. If the score is higher than your nominated limit, then the message will be tagged as spam ...
04 September, 2003: Setting Up Apache 2.0.x + PHP On Linux
The purpose of this document is to describe the setup of the secure web application server on Linux -
we will build Apache with mod_ssl and PHP, implemented as a DSO component. We assume, that by the
time of the installation OpenSSL and MySQL libraries are already installed ...
02 September, 2003: Configuring FTP Server and Firewall
FTP is always a problem for firewalls because of the dual connections. In active mode (the original), the client opens a connection FROM a
random high port N TO the server's port 21 (the control channel). In passive mode the client initiates both connections ...
01 September, 2003: Tcp/Ip port numbers Information for FreeBsd, Linux and etc. system administrators
The port numbers are divided into three ranges: the Well Known Ports,
the Registered Ports, and the Dynamic and/or Private Ports ...
31 August, 2003: FreeBSD Firewall Configuration
FreeBSD 3.x and 4.x make it very easy to set up a rule-based packet filtering firewall. You can protect just one host, or an entire network. You can easily add Network Address Translation too, so that you can connect up your whole internal network via only one IP address from the outside ...
30 August, 2003: Setting Up the Sendmail on FreeBsd or Linux
If you use the FreeBSD-STABLE and CVSup, very likely that you have the last version of sendmail and
you can omit the installation steps ...
15 August, 2003: How to install POP3 and SMTP proxy server on FreeBsd or Linux
The pop3.proxy is an application level proxy for POP3. It connects a POP3 client ...
14 August, 2003: Setting Up FTP server on FreeBsd or Linux
The FTP service is simple to use and administer, which is why it is a good idea to begin with ...
13 August, 2003: Basic Samba Configuration File
The key to configuring Samba is its lone configuration file: smb.conf. This configuration file can be very simple or extremely complex ...
12 August, 2003: Setting Up Samba server
If you want to get started quickly, the CD-ROM packaged with this book contains both the sources and binaries of Samba that were available as ...
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11 August, 2003: Setting Up Squid as caching proxy server
Although native Linux networking allows you to set up your Linux server as an Internet firewall
and gateway for a number of machines on a network, utilizing a caching proxy server can help reduce
your bandwidth usage, as well as give you enhanced logging and filtering capabilities ...
29 July, 2003: Setting Up DNS Server on FreeBsd - Setup for Secondary Domain Name
When you have or get several or more domain name for one IP address, and want to resolve these name
with one DNS server, you can setup as follows ...
27 July, 2003: Setting Up DNS Server on FreeBsd
DNS (Domain Name Service) Server is an important server for the Internet. It determines the name of
network-computer within the Internet ...
21 July, 2003: VirtualHost on Apache
There are two basic kinds of virtual hosts: those that are based on having a unique IP address ...
19 July, 2003: Setting Up secure web server using Apache and OpenSSL
The purpose of this document is to describe the setup of the secure web application server on FreeBsd
using Apache and OpenSSL
01 July, 2003: Selective relaying with tcpserver and qmail-smtpd
What we'd like to do is allow mail relaying from a selected group of IP addresses only
02 June, 2003: Setting Up Apache on FreeBsd
The purpose of this document is to describe the setup of the secure web application server on FreeBsd
28 May, 2003: How to move FreeBSD to a new hard disk
This article will explain how you can move your FreeBSD installation from one hard disk drive to another
21 May, 2003: Configuration of the FreeBsd firewall. Port redirection
and Bandwidth limiting
The firewall configuration are located in the /etc/rc.firewall file. FreeBSD comes with a bandwidth management in dummynet.
14 May, 2003: Sample Database Creation & Permissions in MySql
Most books talk about creating a database, but touch very lightly on setting appropriate permissions for the table
21 April, 2003: How to install MySQL from source on FreeBsd or Linux
MySQL is a fast, multi-threaded, multi-user and robust SQL (Structured Query Language) database server. It provides a nifty API which makes it easy to integrate into other applications, including PHP
28 March, 2003: Setting Up A FreeBSD Firewall
FreeBSD 3.x and 4.x make it very easy to set up a rule-based packet filtering firewall