Protecting files from unwanted deletion is very important security on the tasklist of Unix Administrators. On Linux boxes you can use the chattr command and that works ine on all my Ubuntu based servers. On FreeBSD, this command doesn’t exist. An alternative we use is the chflags command. Let’s give you some examples how chattr work […]
nginx (pronounced “engine x”) is an open-source web server and a reverse proxy server for HTTP, SMTP, POP3, and IMAP protocols, with a strong focus on high concurrency, performance and low memory usage. It is licensed under a BSD-like license and it runs on Unix, Linux, BSD variants, Mac OS, Solaris, AIX, HP-UX, and Microsoft Windows. My test server details: root@FreBSD-Unixmen:/root # uname -a FreeBSD FreBSD-Unixmen 9.1-RELEASE FreeBSD 9.1-RELEASE #0 r243825: Tue Dec 4 09:23:10 UTC 2012 root@farrell...
Who should read this article? Everyone who is interested in computer security and computer networking. Introduction If you run a network small or big, you need a flexible and productive way to monitor network traffic. You need to provide security to machines connected to your network, especially if you have a wi-fi network. Monitoring the […]
Did you know that Unix and Linux has no concept of a file extension? What is a file name extension? A .txt extension tells us that it is a TEXT file and .pdf extension tells us that it is a PDF file. By following this logic, you understand that a file name extension is the […]
The usage of MySQL for development is free. As you are not giving away that product (MySQL), no GPL restrictions apply. If you want to distribute MySQL in some form, the licenses apply. See: MySQL commercial license MariaDB is a community-developed fork of the MySQL relational database management system, the impetus being the community maintenance of its free status under the GNU […]
Lynis is an auditing tool for unix/linux like systems which is used to scan the entire unix/linux systems for security issues, installed software informations, general system information, configuration issues or mistakes, software patch management, malware and vulnerability, firewall auditing, user accounts without passwords, invalid file permissions and many more.
Now that we finished writing the TCP server it is time to write a simple client which will connect to the server. It is very simple to create our client with the socket library and now we have enough knowledge to do it. Our client will open a connection to our server on 113 port, […]
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