Next, change the ModSecurity detection mode. This will turn on ModSecurity using the basic default rules. However, this might differ from the latest version maintained by the developers. Install Git on CentOS :. Next, check your security2. If they are not there, add them. Do not duplicate them, or you risk disabling your Apache service.
The system responds by attempting to display the default webpage. Instead of the content, it generates error codes and messages inside the tags:. You can confirm that ModSecurity worked by looking for code at the Apache error logs with the command:. Another method you can use to test ModSecurity is to use a B ash script.
Type one of the keywords from the rule into the form. Add the content Hello World. You do not need to add any HTML markup to make this work. The sole job of the web server is to serve up a stream of text data, and the server has no idea what the date is or how to render it.
It simply transmits the data stream to the requesting host. Apache is very easy to start. Current versions of Fedora use systemd. Run the following commands to start it and then to check the status of the server:.
The commands may be different on your server. On Linux systems that use SystemV start scripts, the commands would be:. If you have a web browser like Firefox or Chrome on your host, you can use the URL localhost on the URL line of the browser to display your web page, simple as it is. You could also use a text mode web browser like Lynx to view the web page. First, install Lynx if it is not already installed. The result looks like this in my terminal session.
I have deleted a lot of the empty space on the page. Now refresh the browser. The results look just a bit different. The text is in color, which is how Lynx displays headings if your terminal supports color, and it is now centered. In a GUI browser the text would be in a large font. As you can see from this little exercise, it is easy to set up an Apache web server. The specifics will vary depending upon your distribution and the version of Apache supplied by that distribution.
In my environment, this was a pretty trivial exercise. But there is more because Apache is very flexible and powerful. Next month I will discuss hosting multiple websites using a single instance of Apache. At one time I set up a web server and allowed remote connections. If you do this, you have to make sure you learn about deny and allow setup for connections.
It was surprising on looking at connection logs how quickly like immediately you become a target for people trying to log in to your site with privileges. How to configure an Apache web server How to configure an Apache web server.
Learn to host your own website with Apache, a solid, well-known, and easy-to-configure web server. Image credits :. This is equivalent to apachectl -k restart. Similar to the fullstatus option, except that the list of requests currently being served is omitted.
This differs from a normal restart in that currently open connections are not aborted. A side effect is that old log files will not be closed immediately.
This means that if used in a log rotation script, a substantial delay may be necessary to ensure that the old log files are closed before processing them. This command automatically checks the configuration files as in configtest before initiating the restart to make sure Apache doesn't die.
This is equivalent to apachectl -k graceful. This differs from a normal stop in that currently open connections are not aborted. This is equivalent to apachectl -k graceful-stop. It parses the configuration files and either reports Syntax Ok or detailed information about the particular syntax error. This is equivalent to apachectl -t.
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