Website security file permissions
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Website Security Concerns - An Assessment
An unfortunate fact is that there are a lot of ways in which web site security can be circumvented. For example, security dangers exist that impinge on Web servers and LANs (local area networks) where Websites reside, even by the conventional use of a Web browser.
Web Masters are in the front line when handling the major challenges. As soon as a Web server is set up at a site, a window comes into being in the local area network through which anyone who is on the Internet can look. Naturally, most web site visitors see no more than what they are meant to see, but a number of them make an effort to locate parts of the site which are not meant to be detectable by the rest of the world. Unscrupulous visitors want to do more than simply look; they make an attempt to unfasten the window and steal through. The harm they can inflict might be mere vandalism, like substituting the web site's home page with one of theirs which might say or put on view anything at all, or it might be theft, such as gaining possession of a customers or orders list.
It is hard to avoid the virtual certainty that complex software contains bugs. Regardless of how methodically it's tested, you can find usually a particular combination of events or user actions, although it may occur seldom, which brings about a fault. Software bugs give rise to gaps in system security. A Web server is complex software that may quite possibly contain a security weakness.
It's not only the intricacy of a Web server that may cause a problem, but also its open architecture. Consider a CGI script as an illustration. A CGI script can be executed at the server in response to a remote request from a client. It could be a request from an application or even the click of a button in a browser. If the CGI script contains a bug, there's a danger of a security breach.
Network Administrators also have to handle problems from Web servers because of the risk they pose to the security of the local area network. Whereas there should be no unauthorised incursions, admittance must be granted to web site visitors. This means that access to the network has to be controlled. The Administrator therefore needs to perform a delicate balancing act. Even the most robust firewall may be compromised if the Web server is configured poorly. Concomitant with this constraint, normal use of the website may be unachievable if the firewall is configured poorly. Attaining an ideal resolution is still more complicated if an intranet forms a constituent of the system. Normally, the Web server then needs to be configured to identify and verify domains and user groups, which are liable to have varying permission levels and access privileges.
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Nearly everybody using a browser to surf the Net believe that they're doing so in secret and in safety. This is not correct. Web browsers are able to process autonomous programs on the local machine which are resident on a website. Current browsers show a caution and request authorization to execute those programs. Described generally as "active content", e.g., ActiveX controls or Java applets, these programs, if malicious, can easily deposit a virus or other dangerous software on the browser user's PC. Once it's in the system it can wreak all kinds of damage and can be extremely stubborn to get rid of.
This is also a concern for Network Administrators. Web browsers afford a way for possibly malicious software to seep through the local area network's firewall. When it is in the network, the damage it may inflict can range from surreptitiously stealing private data to meaningless destruction.
Besides the matters surrounding active content, merely browsing the Net leaves a trail of the user's activities in the browser's history. This can be utilised by websites and installed software programs to create an accurate report of the user's behaviour and preferences. Though this may be considered an invasion of privacy by some people, it can be beneficial by showing relevant content immediately, so exonerating the user of the task of looking for it.
Secrecy is a topic that worries not only browser users but also Web Masters and Network Administrators in the actual transmission of information via the Web. TCP/IP (Transmission Control Protocol/Internet Protocol) is the basic language of communication for the Internet. When it was created, security wasn't the principal feature of its design. Both network and Internet transmissions should therefore not be thought of as as necessarily private. Whenever the browser on a local PC downloads a sensitive document from the remote Web server, or the browser user fills out a form with personal data and clicks the 'Submit' button, the transmitted data could be intercepted without consent.
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