Author: thx11314

Fail2ban ERROR /bin/sh iptables No such file or directory

In Fail2ban version 0.9 running on Debian 9 server fail2ban.action [17325]: ERROR -n -L INPUT | grep -q ‘f2b- [ \t]’ — stderr: b’/bin/sh: iptables: No such file or directory\n’ [edit] /etc/fail2ban/action.d/iptables-common.conf [change] iptables = iptables [to] /sbin/iptables = iptables

Bash PS1 Manual Prompt Variables

PS1=’\[$(tput bold)$(tput setab 1)$(tput setaf 2)\]\t \u@\h \w \[$(tput sgr0)\] ‘ https://linuxconfig.org/bash-prompt-basics \a : an ASCII bell character (07) \d : the date in “Weekday Month Date” format (e.g., “Tue May 26”) \D{format} : the format is passed to strftime(3) and the result is inserted into the prompt string; an empty format results in a locale-specific time representation. The braces...

How to Force HTTPS using Apache

Edit .htaccess <IfModule mod_rewrite.c> RewriteEngine On RewriteCond %{SERVER_PORT} !^443$ RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301] </IfModule>

Debian 9 Stretch Apache 2.4 MariaDB 10.1.26 PHP 7.0

Installation notes for Debian 9 Apache 2.4 MariaDB 10.1.26 PHP 7.0 differ somewhat from prior LAMP installations. Also included here are notes on PSAD and Fail2ban. PSAD requires netstat which is no longer included in Debian 9 apt-get install net-tools apt-get install apache2 apt-get install software-properties-common apt-get install mariadb-server sudo /usr/bin/mysql_secure_installation sudo mysql -v

SSH Reverse Tunnel Not Working Mystery

When using autossh to create a reverse tunnel, sometimes, mysteriously (for the moment), on the remote server, the connect is refused, returning this message in syslog/messages autossh[7451]: 127.0.0.1:{port}: Connection refused The problem is autossh process is running (pid 7451) but frozen ( thats the mystery ) The solution: sudo kill $(ps aux | grep ‘autossh’ | awk ‘{print $2}’)

How To Set Up Password Authentication in Apache2

sudo apt-get install apache2-utils ( FIRST USER only ( -c ) option to create file, or you will wipe all your existing logins !!! ) sudo htpasswd -c /etc/apache2/.htpasswd username1only sudo htpasswd /etc/apache2/.htpasswd username2etc Conventional setup sudo vi /etc/apache2/sites-enabled/000-default.conf ( In which case you must specify the Directory to be protected ) <Directory “/var/www/www.example.com/administrator”> AuthType Basic AuthName “Restricted Content” AuthUserFile...