This article will help you identify an possible spam scripts that may be causing unwanted outbound mail which could cause your servers ip address to be blacklisted.There are many different ways a script may get onto the server however we I will provide several different tools and methods to help identify scripts. PHP scripts …
Sometimes, you may encounter a situation where you see some ports being used by some service, but you cannot exactly determine which application/service is using it. This article talks about how to identifying such services. FreeBSD In the case of FreeBSD, you can use “lsof” command to determine the service that is reserving port as below. lsof -i :199 …
The ‘find’ command is quite useful as it helps to identify files with specific permissions, users,groups, size, etc. Also, it is quite helpful to as it allows to process its results when combined with other commands. This article talks about some useful ‘find’ commands. Find all files named ‘test.jpg’ inside /home directory …
View Loaded Apache Modules Just one command: apachectl -M Or, if you want to view the list in alphabetical order: apachectl -M | sort Or, if you want to view the list in reverse alphabetical order: apachectl -M | sort -r
The general command is php -m; this command will give you the full list of extensions: php -m This command will give you an output like: bz2 calendar Core ctype curl date ereg exif fileinfo filter ftp gettext gmp hash iconv json libxml openssl pcntl pcre Phar readline Reflection session shmop SimpleXML sockets SPL standard …
Many articles in our Webair Community advise editing configuration files. We usually recommend using your preferred text editor. I personally prefer vim. Vim, or its older sibling vi, are installed by default on nearly every server that I come across. If you do not yet have a preferred text editor, read on to see if …
What Operating Systems Have Adopted systemd? CentOS: Yes, by default since CentOS 7 Fedora: Yes, since the release of Fedora 15 RedHat: Yes Debian: Yes, shipped since Debian 7 as a technology preview Arch: Yes Ubuntu: Available Gentoo: Available OpenSUSE: Available Slackware: No What About chkconfig and Other Legacy Commands? With systemd it is …
Hot linking is displaying an image on a website by linking to the same image on another website, rather than saving a copy of it on the website on which the image will be shown. Lets say, you have an image at www.yourdomain.com/image.jpg and it is not well protected. If someone links this image to …
Wouldn’t it be nice if we can set files so that even root cannot modify or delete it ? Both FreeBSD and Linux come with commands that allows us to set files as immutable. If you have files that you don’t want anyone to modify/delete by mistake, then these commands are quite useful. FreeBSD …
An SSL certificate is ideal for securing an administration interface, a member’s-only space, an intranet, webmail. etc. It is used is to keep sensitive information sent across the Internet encrypted so that only the intended recipient can understand it. When installed on a web server, it activates the padlock and the https protocol (over port …