You have lunched your website and you are assuming it will lay secure on your hosting service’s hands, right? Unfortunately, not always. There are plenty of hosts that will make your life miserable and unless you go with some of the most well known companies, such as HostGator or Just Host, you are likely to find yourself searching the web for articles like these…
1. Introduction
Such as server “which are always on” is designed as a system for security is an important issue. Web servers are the backbone of the Internet. The basic services and functionality across the world billions of websites and therefore everyone’s personal information store that serves as the journey. Ensure that the server is secure from outside attack of any organization that depends on them for one primary concern.
In recent years, attacks have increased against web servers. As the map shows, no matter where in the world by a Web server: malicious code does not respect borders. No international threat, but now comes from organized criminal gangs that harvest passwords, financial data and other information instead of getting teenagers to want to harm hackers. Most cases are silent attack, server and infected with malware designed to corrupt sites as many users as possible.

Web servers are particularly vulnerable because they “are open in nature, with the users to send and receive information from them encouraged. Httpd (HTTP server daemon), database software and code behind a Web site can re-written by one criminal and changed its original function.
However, this does not mean that the web server can not be protected. They, but this Web site administrators, programmers and designers need an integrated approach is similar, in areas such as anti-virus software can do together, operating system (OS) and access permissions that need constant revision is.
The document examines several areas in the threat and ways to prevent lead from a Web server.
2. Safe foundation
The first step in designing, building or operating the secure website ensures that the server host is as safe as possible.
A Web server provided several opportunities to strike up the layers, as is the picture below shows. Remember, each block is a potential target.
Any server based OS to ensure that it is safe and simple: Keep it keeps updating with the latest security patches is the mystery. It can not be easy, with Microsoft [1], several flavors of Linux with organizations to apply patches automatically or allowed to start with a simple mouse click.
But remember that hackers from the server to server until this jump is one that finds unpatched with malware designed to automate their own efforts. That is the reason to ensure that your patches are up is important – the date and properly installed on any server as the old patches, one will have to become victims.
You can also update to any software components must remember that a web server runs. Anything that a DNS server and non-remote administration tool like VNC or Remote Desktop as, should be removed or disabled is required. If remote administration tool is necessary, however, the default password or something that can be easily estimated [14 using an escape]. This is not applicable for remote access tool, but user accounts, as well switches and routers.
Anti-virus software is the next area are addressed. This is a must for any Web server – whether it is running Windows or Unix – and, combined with a flexible firewall, protection against security violations is one of the strongest forms. When attacking a target web server will attempt to immediately upload hacking tools or malware, so take advantage of the security breach is fixed before. A good anti-virus package, without a breach in security unnoticed a significant amount of time can be taken.
When the defense comes to a multiple, layered approach is best. Firewall and OS are in the front row, while anti-virus in trenches, and the crowd is ready to fill any gap that our current.
In summary:
• do not need you not install software components. Each component is a risk, are more and more risks
• With the latest updates to your OS and application security compromise yourself.
• Use anti-virus, and regular updates automatically check that you can install it correctly.
Some of these onerous tasks, perhaps forgetting that only one security hole visible but not enough to have a strike. Potential risk data theft and bandwidth, server IP blacklisting, negative impact on an organization’s name and include the possibility that your website can be unstable.
The next most important piece of software HTTPD, being the two most popular choices with ISS and Apache.
Internet Information Services IIS 2.1 ()
ISS is part of Microsoft Windows and a popular and common web server is used because it requires very little configuration.
When, however, it is worth remembering after the implementation:
• FTP and SMTP as basic services like disabled until you need them. Disabled until the visitors browsing the directory function as this are the files on your system allows is needed to see.
• Disable any that did not use FrontPage Server Extensions is going.
You also completely updated ISS, which is the only auto-update function that is found in Windows Control Panel can be done by enabling should be.
2.2 Apache HTTP Server
A very well and is configurable Apache open source Web server maintained. A more detailed configuration is needed to successfully deploy, but provides more control on a Web server. The run on Apache Linux / BSD server, but it can run on Windows.
Because Apache is configured to campus, there’s space for expansion in this paper is not the whole process. However, the following recommendations [2,3,4] are worth bearing in mind:
• default access denied resources and only allow the desired functionality as resources.
• As they log all web requests to help identify suspicious activity.
Mailing list server • Apache announced that updates, patches and security fixes can send to subscribe.
Sometimes a more complex website functionality, a server cgi (common gate interface) side by the need to increase interpreter with HTTPD. Are the two most popular PHP and ASP.
2.3 PHP and MySQL
The most common server-side scripting language PHP is one. This is a very large functional code base, simple syntax, adaptable code, and most importantly, database design interacts with a large number did. One of the most popular options for MySQL databases in conjunction with using PHP as it is fast, feature rich, easy to configure and use.
PHP is often accused of security has been lax in as many years it has been found on insects exploited. But, it matured rapidly and most of worms either install correctly configured and / or have refrained from writing code securely.
Here are some suggestions configuration (after writing secure code is covered in one section) to php.ini “is related to the variable” file:
• ‘Set register_globals’ off
• ‘Set safe_mode’ on
• ‘Set the base directory website open_basedir’
• ‘Set display_errors’ closed
• ‘set log_errors’ on
• ‘set’ allow_url_fopen off
These instructions for more information about the configuration and why they are important, please see [6,7,10].
When MySQL is installed a ‘default’ test database and creates an ‘open’ root account password that is free. Root Server, which automatically accounts so it is important to every other free database access is granted:
• Change the root password immediately.
• Create new users and the minimum privileges to MySQL.
• Remove test database and test users.
ASP Active Server Page 2.4 ()
ASP is supported by a Microsoft-IIS on it, but added there is an Apache implementation. Generally less integrated into IIS and ASP or any configuration is required.
2.5 Security
Anti-virus protection usually is a reason why the web server attacks, particularly those dealing with dynamically generated content, but is should be used against the last line every time scanning is enabled. As the chart below shows, a Web server is protected from malware. No matter how safe you feel that your web server, there is always a chance that he will be disconnected. – But a malicious system as used in scanning both ‘read on’ and ‘writing mode can scan reduces the chance of running code, and any piece of malware as an immediate information can offer at the store tries to server.
While on the server can use scanning throughput little affected, but said that safety benefits far outweigh any possible performance issues. There system regions, such as HTTPD log folder, which scans, further reducing any effect on the system can be kept out.
Usually two main types of attacks against web servers: the category can be local and global.
• For information on local attacks usually theft or attempted to take control of a specific Web server.
• Global attack to target common as many websites and are targeted at them and infect someone.
Although Linux and BSD as some quarters are considered more secure than Windows, they are certainly not free of organized crime. They – and – to be anti – virus software can set up. If protected with anti-malware, hosting servers because it is the virus software can not apply, it still can act as legitimate content to website users as some hackers upload it in PHP or ASP, This type of web server OS will render meaningless.
It is also possible for servers across a local network are infected. Fujacks family of worms, for example, infected HTML, PHP and ASP files on shared drives and network shares.
3. Foreign/External Web Hosting
Most organizations for the stability of hardware or bandwidth host and your own web server does not use such external providers. There are three options that are appropriate for small and large organizations:
3.1 Shared Hosting
This is probably the most used and abused and all forms of web hosting including one dedicated server hosting multiple websites. The cheapest one in terms of hosting and consequently one of the most dangerous, for it to take only one infected user can use and everyone infected server.
3.2 Virtual Private Hosting
Virtual dedicated servers – sometimes referred to as flexible servers – virtualization software to use many different part, the machine itself is only one virtual server is created by vested. It suitable for any growing organization as each user and server software for its OS is used.
3.3 Dedicated Hosting
Dedicated servers are reserved for one user in particular. There are usually available in two forms: managed and unmanaged.
• Managed Server employees work arrangements such as local security issues and troubleshooting will take care of., and operate some unmonitored
• Unmanaged servers are cheaper, as would any purchased to assist in .
Three options presented here, are most effective for virtual dedicated hosting which are usually cheaper than going on but then dedicated hosting is to maintain flexibility and security.
4. Design yourself safe
No matter what you do and no matter how small your website, it will be attacked. Designed for internal security as it can reduce damage viruses, and other malware / spyware caused.
Put yourself in the shoes of the attacker who is using common sense to try and plug glaring holes. Some websites make mistakes so often – are
Early and old hands alike – if they are worth being here.
4.1 Cookies
One of the main problems encountered when designing a web application that every request for a new page is dealt with independently last request. For a web application ‘I remember’ ask why more and more applications are in general difficult.
There are two ways to visitors to remember that Web applications and are supported by most browsers: using cookies and session cookies.
• A cookie and a small file created by the browser are stored on the user’s computer. This can include anything really, but as a common name,
A termination date and such an arbitrary amount of data: “=” 100 or “member = false” Count.
• A session cookie is like a regular cookie, but this web application to store data in memory allows.
The difference between a cookie is stored on computers directly to users and residents is until manually deleted. One session cookie meanwhile, only saved as long as a computer is switched on, and automatically as soon as the browser has stopped lost. They do. There’s something in common: they both can be tampered with.
Developers often just because they code data they have developed cookies and it would be nice not to have to regain trust? Wrong.
Hackers easily modify a cookie (the session data can and in some cases G) for a website to access a restricted page fool.
When designing your system never trust user input, whether visitors, or indirectly through cookies is straight. Try and limit the amount data is stored in cookies, particularly if the figure should not be made available to the public’s. A good rule is no data that treatment. Finally, as a suspect stored on the user’s machine.
MySpace.com targeted by a TROJAN (JS / SpaceStalk-A) this year, who stole information stored in cookies and it was sent to a remote server. This information in principle such login name and password as Internet preferences may be confidential information.
4.2 Certification
If your website that only some customers or areas to include for registered users, you need A way for visitors to identify themselves before they gain access [8]. Number of ways to authenticate users there: Basic Authentication, Digest Authentication and HTTPS.
• Basic authentication a username / password combination to see web requests inside. If the content is not restricted
The secret is best avoided in particular, a user password using one of several sites since May. A poll revealed that Sophos 41% of users use
Password same for all online activities, be it a banking site or a local community forum 15 [is]. Against this mistake trying to save our users by using a more secure authentication method.
• Digest authentication – supports all popular servers and browsers – securely encrypted username and password in the request. User name and password are secure, the user creates better effect and is less likely your server is being abused.
And not all browser • HTTPS server, user name and password to transfer data between encrypts. You should use https (which depends on a security system is called secure sockets layer, or SSL) whenever you are asking users to provide personal information such as personal or his address, credit card or bank statement.
When choosing an authentication system, is good practice to choose the best available. At some security-conscious customers have to worry about and possibly expose them to unnecessary risks.
4.3 Components, libraries and Add-ons
Many web developers do not have time to repeat this work. When a feature that is common elsewhere easiest way is said to add a package that already includes the necessary components and customise source. Such outsourcing is mainly with the complex, such feature-rich micro blogs, forums and content management system (CMS) as an application. East to use and popular systems are clear cause: to save time and money they. Like all pieces of software, however, Add-ons deficiencies and prevent any packages that are used to track and update may hit them regularly. Popularity of some of these packages sometimes can create a feeling of trust and a dizzying number of public popular products have been found exploitable, even when apparently installed and configured correctly. With popular server side application that had problems in the past is important, exploiting bugs include:
• WordPress (blogging software).
• phpBB (forum software).
• CMS Made Simple (CMS Software).
• PHPNuke (CMS Software).
• bBlog (blogging software).
And (similar) add-ons over the widely used, which they very attractive target for hackers as he makes several significant increase
Possible number of victims. The software automatically update OS and HTTPD can be many ‘developers set and forget some features,
But ignoring the various-ons: add a dangerous mistake for updates.
Then, in the form of golden rule here, if you do not need it, get rid of it! If your hosting provider supplying such facilities by default, close them.
If you are unable to disable them, you should think about finding a new provider.
4.4 Log Files
Server logs one very important when managing a website’s content. To protect access to the HTTP server can be configured as well as log error logs, and it should be enabled all the time because it is important when a review will be conducted. They regularly be reviewed as they face threats that websites can provide a better understanding. Log files provide an insight recording of any possible violations, in great detail, every attempt to access a site or a success.
5. Code Breaking
Secure code is not as easy as it always seems writing. It only takes a skilled programmer, but also the special security issues that [9 is aware of one]. So there I was just completely secure coding Basics will cover here [13 are devoted to books].
• Always as global variables or post requests they receive a fake by deliberately initialised can enable.
• Error Reporting and make sure you log off – instead of the file, as such information can help the attackers have a similar problem, provoke and manipulate it further exposes weaknesses.
• do not trust any user data and using special SQL characters always work filters tab and escape sequences.
5.2 SQL Injection
Websites for SQL injection attacks that can be interacted with the database. This occurs when the unfiltered user input is used to designate a SQL query.
In a database for SQL database queries, or insert data query can be modified / delete data from a database. A lot of modern websites and use SQL scripts to generate dynamic page content. User input is often used in SQL queries and can be dangerous as hackers try to input data can embed code within the SQL invalid. Without careful attention, this malicious SQL server can be executed successfully.
Take the following PHP Code:
$ _POST = Firstname $ [ 'firstname "];
mysql_query ( “select * from where first_name = $ ‘user’ firstname”);
After you submit your first name in Web form, users that SQL query will return a list of your first name. If I my name as “Chris” cast, will SQL query:
“First_name =”select * from users where Chris”
This is a valid statement and work as you would expect, but what if my first name instead, I ‘like’ something put in, drop table, # be? “So the statement would read:
“Select * from users where first_name =”; drop table users; # ‘”
Semi-colon to run many commands, it allows one after another. Suddenly a complex three-part simple statement is the statement:
Select * from user where first_name =”;
Drop table users;
# ‘
Original statement is useless now, and can be ignored. The second drop database statement (delete) the entire table and directed the third character that says”# rest of line ignored for MySQL uses.
Above is particularly dangerous and sensitive data, update or remove fields / information display can be removed. Some SQL database server also can be performed by the command system. Fortunately this type of risk easily avoided by user input is valid. Out of a possible SQL injection in PHP called code is a special function to separate ‘mysql_real_escape_string. Filters should be used for the event that any data is passed to a SQL statement.
5.3 XSS (cross site scripting)
This type of attack websites that display the user’s data is focused on supply. Instead of attempting to control database with malicious input, output with malicious attacker tries to attack the website code. Several sites in a database user name of every visitor that a particular shop when a normal user an attacker to create a false account, the user name field, but instead one for malicious code in place can display log name name. Common such as malicious attacks are achieved with JavaScript scripts that load the content from another website. Thinks it is the user name database stores, but the malicious code. , Then try the website top of the page, malicious code to display the user name is inadvertently killed. Since the code is possible, depending on the circumstances, just about anything, this is a very real concern and is often overlooked by developers. Recently several high profile websites in the history of MySpace, Facebook and Google Mail are victims of attacks, including XSS.
Take the following PHP code:
$ _POST = Firstname $ [ 'firstname "];
Your name echo “is: $ firstname”;
After sending his first name in Web form, the website will display a message on the page. If I my name as “Chris” add, message says: “Your name is: will Chris.”
What if I use “decided <script> warning (” You just stopped !”);</ script> found ‘the place is my name?
Unfortunately, sometimes to protect against XSS attacks can be difficult as they depend on the correct input and output filters and then each region can be modified by users to verify that. Go and post this request, as well as questions that has come back from the database includes data from.
If you use PHP there are a number of packages that can help you easily filtered output, is an example CodeIgniter 5 [are]. Alternatively, there’s a native PHP function called htmlspecialchars’ filters that can be used for production
6. A study of how easy it is
Although this paper I decided to see how easy it is to research data and a common FTP client, for example, found leakage default log file name must have a Google search. I have websites that publicly (and unknowingly were displaying index) This seems trivial FTP log file found in thousands. Every one excellent example of data leakage.
Here it is censored (a) log:
99.07.16 08:34 A X: \ xxxxxxxx \ xxxxxx \ xxxxxx \ WS_FTP.LOG <- <Site name> / export / home / <username> / xxxxxx / WS_FTP.LOG xxxxxx
99.07.16 08:53 A X: xxxxxxxx \ \ xxxxxx \ home.html xxxxxx \ -> <hostname> / XX www / / xxxxxx-xxxxhome.html XXX /
The number of interesting things I learned:
gave the name of my website <site • name>.
<user • name> login name on Linux / BSD style servers is provided.
is <host • name> server hostname supplied.
It says the following about my host:
Web server name and IP •.
It was in the way of remote copy •.
Local path was copied from •.
Notice of any such offender is gold dust, as the hostname and user name by knowing or he can try to access administrator. He also could find only web hosting company, phone number or email address and passwords through social engineering efforts to achieve.
Often as simple as the server after several companies outside the minimum security check before you start handing over security credentials web hosting attacked. It could be because they often a third party’s personal web contractors who are building a site are contacted by, maybe, and getting enough to eat or resets the password to ask you to identify is called for.
I myself have done this many times – legitimately of course – and only four different companies, I expressed to the basic business need to allow one of said. Yes, as easy, as that it is true.
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So it’s been a few months since you started an online home based business and you’re thinking of cutting your losses and running. We’ll that’s the natural instinct when face with a threatening situation. Here the threatening situation is keep losing money or cut your losses. So I’ve put together a few pros and cons of the two scenarios to help you decide whether you should “fight or flight”.
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