…page in the status bar, the IP will be red if connecting over IPv4 and green if connecting over IPv6. Requires that you are ipv6 enabled on your computer/ISP. It…
ipv6 tool in your Firefox browser
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WordPress permalinks with nginx
…will also work for 404 requests. If your blog is at the root of the domain (something like http://www.yourdomainname.com), find the location/ block inside the configuration file, and add the…
Change the Default Listening Port for SSH
…something goes wrong. cp /etc/ssh/sshd_config /etc/ssh/sshd_config.old Open the SSH config file with your favourite editor (I use nano): nano /etc/ssh/sshd_config Look for the Port variable:, it could be commented out,…
Addon domains to website in cPanel
…about creating a new domain. Before we enter any data please check if there any domain already added to the account at the end of the page. If you see…
Email notification when someone logs in via SSH
…server and “email@thisaddress.com” to your own email address. echo ‘ALERT – Root Shell Access (ServerName) on:’ `date` `who` | mail -s “Alert: Root Access from `who | cut -d”(” -f2…
checkrestart – Is your debian secure after an update?
After the heartbleed bug that made everyone upgrade their OpenSSL installations in fear of hackers getting access to login information I noticed that more and more comments with questions like…
Java Security Settings
Introduction With the latest Java updates the security settings has been set at a higher level by default and there are many websites that now experience problems with some older…
Find your Debian version, the command line way
…like the kernel headers, for example: apt-get install linux-headers-$(uname -r) Do you know more ways to get the OS version from the command line? Post a comment with your suggestions!…
WordPress: grep the login attempts
…By adding the parameter -v to the grep command we invert the result to include everything that is NOT inside the ” “. Feel free to leave a comment below…
Basic MySQL commands explained
…and working. [alert style=”green”]The commands are not case sensitive but are listed in all caps by convention. It makes the keywords easier to recognize.[/alert] The MySQL client All the commands…