Linux Shtuff

If you store important information on your Linux server and want to make sure it is for your eyes only you need to password protect these files. Let’s see how you can do this with Linux. First, pick a good password. There are a few websites on the Internet that help you generate strong passwords….

If Whm/Cpanel/Webmail is not loading in ssl mode (2087/2083/2096) then first you can try httpd (stop/start/restart) If it not works then https authentication is usually run by the stunnel for c-panel; and since the error is shown only when data transfer using stunnel is done; you can try a stunnel restart. do the following: ===============…

To write a message to users that have login, you can using the command write. But before that, you need to check who is login, and which terminal he is login to, use command who. Let say you was unable to call your friend, maybe he forgot to bring his cellphone and you know he…

For more information on Exim cheat sheets see bradthemad.org Here are some useful things to know for managing an Exim 4 server. This assumes a prior working knowledge of SMTP, MTAs, and a UNIX shell prompt. Message-IDs and spool files The message-IDs that Exim uses to refer to messages in its queue are mixed-case alpha-numeric,…

MAIL First run a quick test to make sure the “sendmail” application is installed and working correctly. Execute the following command, replacing “[email protected]” with your e-mail address. # mail -s “Hello world” [email protected] Hit the return key and you will come to a new line. Enter the text “This is a test from my server”….

OpenSSH is a great means to protect your connection from being sniffed by others. However, this isn’t always enough. Simply proving that you connected to a server is enough to get incriminated. Unfortunately, SSH doesn’t provide a native way to obfuscate to whom it connects. Instead, a proxy server can be set up. And this…

Ever want to schedule a tweet to go out at the same time an article is published or an event is started? Want to do it without signing up to a service or some other complicated task? Well this post is for you. I am going to show you how to schedule a tweet from…

(from tuxopia.net) I was troubled by the fact that my server was constantly being bombarded with SSH probes for as long as 1 to 2 hours at a stretch. Although the SSH daemon configuration has been tuned for security like disabling root access, allowing only a certain list of users, etc., a continuous SSH probe…