| by Scott Kilroy

How to Install Slack on Ubuntu 20.04

Slack is a modern communication platform for companies to replace emails. In this guide we will learn how to install Slack under Ubuntu 20.04. Slack can be easily installed on your system by following a few basic steps. Here we will use the snap packag…

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| by Scott Kilroy

How to Install Calibre Ebook Server on Ubuntu 20.04

Calibre is a free and open-source e-book manager. It ships as a cross-platform desktop application along with a server component and can be used to manage your e-book library.

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| by Scott Kilroy

apache – watch httpd for connected clients

watch httpd for connected clients watch “netstat -anpt | grep httpd | grep ESTABLISHED|cut -b45-60 | cut -d’:’ -f1 | sort” OR netstat -plan|grep :80|awk {‘print $5’}|cut -d: -f 1| sort|uniq -c | sort -nk 1

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| by Scott Kilroy

apache – test mod_evasive is setup correctly

You can use this simple script to test mod_evasive is installed and running. I didn’t write this but forgot where I found it. Sorry for the lack of credit where it’s due. #!/usr/bin/perl # test.pl: small script to test mod_dosevasive’s effectiveness use IO::Socket; use strict; for(0..100) { my($response); my($SOCKET) = new IO::Socket::INET( Proto => “tcp”, PeerAddr=> “w3.fiendishplan.com:80”); if (! defined $SOCKET) { die $!; } print $SOCKET “GET /?$_ HTTP/1.0\n\n”; $response = ; print $response; close($SOCKET); }

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| by Scott Kilroy

Apache modrewrite examples

modrewrite rule if you create folder it can be used as a subdomain RewriteCond %{HTTP_HOST} !^www\.website\.com$ RewriteCond %{HTTP_HOST} ^(.*)\.website\.com(.*) [NC] RewriteCond %{DOCUMENT_ROOT}/%1 -d RewriteRule ^(.*)$ http://www.website.com/%1$1 [P,L] requires both mod_rewrite and mod_proxy to be running 1. Forcing www for a domain while preserving subdomains RewriteCond %{HTTP_HOST} ^([a-z.]+)?example\.com$ [NC] RewriteCond %{HTTP_HOST} !^www\. [NC] RewriteRule .? http://www.%1example.com%{REQUEST_URI} [R=301,L] Site has permanently moved to new domain # domain.com to domain2.com RewriteCond %{HTTP_HOST} ^www.domain.com$ [NC] RewriteRule ^(.*)$ http://www.domain2.com/$1 [R=301,L] RewriteEngine on RewriteCond /your/docroot/%{REQUEST_FILENAME} !-f […]

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| by Scott Kilroy

Installing apache mod_evasive on ubuntu

apt-get install libapache2-mod-evasive in /etc/apache2/conf.d create file called modevasive with the following: <code> <ifmodule mod_evasive20.c> DOSHashTableSize 3097 DOSPageCount 2 DOSSiteCount 50 DOSPageInterval 1 DOSSiteInterval 1 DOSBlockingPeriod 10 DOSLogDir /var/log/mod_evasive DOSEmailNotify ADD_EMAIL DOSWhitelist 127.0.0.1 </ifmodule>

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