All posts tagged linux

How to Create a Websense Content Gateway (WCG) on CentOS

websense-logo

When you implement a Websense proxy solution and you don’t guy one of their appliance then you have to setup the proxy components yourself.  This can be fairly easily done on a CentOS install running on VMWare or Hyper-V.  This how to will walk you through getting a Websense Content Gateway (otherwise known as a WCG) with version 8.0.1 on an appropriate virtual host.

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How to DNSPerf on Ubuntu 14.04 with Installation and Quick Start

caution-high-voltage-zombies

It’s a shame that we don’t have the very awesome DNSPerf available in the Ubuntu repositories, however it’s very easy to install and well worth the small effort of compiling it from source if you are wanting to test the performance or stress test your DNS servers.

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IPSec VPN Host to Host on Windows 2012 R2 and Ubuntu 14.04

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After one of my recent tutorials about a host to host Linux VPN this post is a how to create a host to host VPN between Windows 2012 and Ubuntu 14.04.  We’ll be using the inbuilt Windows Firewall with Advanced Security and Strongswan.

A lot like my last tutorial I couldn’t find any decent information out there how to get an IPSec connection between Microsoft and Linux, but since IPSec is an open standard I was confident it should work. After spending a lot of time working through how to do this I decided to write this post to hopefully help other people out in the same situation.

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An Immature Way to Use Sudo

Control versus Escape
gyp@server12:~$ apt-get update
E: Could not open lock file /var/lib/apt/lists/lock - open (13: Permission denied)
E: Unable to lock directory /var/lib/apt/lists/
E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?
gyp@server12:~$ alias flipping=sudo
gyp@server12:~$ flipping apt-get update
[...]
Fetched 3,214 kB in 2s (1,167 kB/s)
Reading package lists... Done
gyp@server12:~$ unalias flipping
gyp@server12:~$ :)

And who says swearing at computers isn’t fun…

Securing WordPress from Brute Force Attacks by Country Blocking on Nginx

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After having looked after a number of WordPress websites over the last 7 years or so it has become apparent that the number of brute force attacks specifically targeting WordPress is increasing. I know it isn’t a matter of if one of these attacks succeeded but when. This tutorial won’t completely get rid of all brute force attacks, but it should reduce them quite a lot.

As a totally unscientific observation I was going from around 10,000 attempted logons a day, to only a couple of dozens actually getting as far as authenticating.  All this without inconveniencing either myself or my customers!

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