![](https://ipfail.org/wp-content/uploads/2020/12/Cloudflare-ESNI-ssl-dnssec-Checker_cr.png)
Secure Your Browser with Secure DNS – DNSSEC, TLS and Encrypted SNI
Well, this is new to many, and for most it is like an alien technology, but this is the future and it is absolutely necessary
![Firewall Linux Server, Security](https://ipfail.org/wp-content/uploads/2020/12/Firewall_1608319244.jpg)
Delete UFW Firewall Rules on Ubuntu & Debian Server – Linux
If you want to delete active rules (filters) from UFW – Uncomplicated Firewall – , find out that it is very simple and there are
![http_query_url_web_link](https://ipfail.org/wp-content/uploads/2020/12/http_query_url_web_link.png)
Add and Remove Query String Variables in PHP – The Easy Way
PHP offers two functions that are very useful for us in generating or modifying a link: parse_str – automatically converts all query parameters into an
![ssh-putty-server public-key-security](https://ipfail.org/wp-content/uploads/2020/12/ssh-putty-server-public-key-security.png)
How to Change default SSH Port 22 to Increase Security
By default, the SSH service runs on port 22, but to prevent automated robots and malicious users from brute-forcing into your server, you should consider
![Header-Cloudflare-Response DevTools-ipfail-org](https://ipfail.org/wp-content/uploads/2020/12/Header-Cloudflare-Response-DevTools-ipfail-org.png)
HTTP headers used by Cloudflare when operating as a Reverse Proxy
CF-IPCountry – This header contains the country code of the home visitor, it is a two-character value that will contain the country code, if the
![Http to https , secure site](https://ipfail.org/wp-content/uploads/2020/12/http_1608174029.png)
Automatic HTTPS redirection for HTTP – htaccess,php,html or javascript
1). How to redirect HTTP to HTTPS from .htaccess <IfModule mod_rewrite.c> RewriteEngine On RewriteCond %{HTTPS} off RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301] </IfModule> The above code redirects
![DNS-ipfail-org-Cloudflare-Web-Performance-Security](https://ipfail.org/wp-content/uploads/2020/12/DNS-ipfail-org-Cloudflare-Web-Performance-Security.png)
How to use Cloudflare CF-IPCountry Hader in .htaccess !
The CF-IPCountry header is specific only to those who use Cloudflare in “Proxied” mode, so if you do not use Cloudflare, then this article is
![ISO-not-UTF8-Sutitles](https://ipfail.org/wp-content/uploads/2020/12/ISO-not-UTF8-Sutitles.png)
Convert Subtitles SRT from ISO-8859-16 to UTF-8 – iconv – Linux
On the current personal NAS server, which is more like a Media Server for a Home Theater, I installed Jellyfin instead of more “popular” but not
![Linux Delete-Remove, Files](https://ipfail.org/wp-content/uploads/2020/12/remove_files_1608157108.png)
How to Remove Files Recursively using Wildcard? – Linux Command Line
A short time ago I had to delete a lot of files created by a script, which I didn’t need anymore, but those files were