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Fail2ban

Introduction In this article you will learn how to install and configure fail2ban, a security tool that defends against brute force attacks. Before any attackers can compromise a system they have to find a way in. They might take a brute force approach, t ...

Filed in: Cloud Servers

Multiple SSL Certificates on a Single RackConnected Cloud Server (PAT)

Each Cloud Server comes with a single private IP address.  When leveraging RackConnect, if you need direct access to the Cloud Server from the Internet, you can utilize the public IP assigned to your RackConnected Cloud Server (the "Provision public ...

Filed in: RackConnect

SSL Termination on Cloud Load Balancers

What is SSL Termination? SSL Termination is a new feature available for Cloud Load Balancers that allows for the termination of secure traffic at the load balancer once the load balancer is configured for it.  Without this feature enabled, secure traffic ...

Rackspace Cloud Essentials - Basic Cloud Server Security

Although Rackspace Cloud has taken steps to make your default Cloud Server image as secure as possible, the first line of defense lies in the hands of you, our customer.  Follow these steps immediately after creating your Cloud Server to help protect the ...

Filed in: Cloud Servers

Installing an SSL certificate on Apache

This article is a continuation of Generate a CSR and will take you from creating and receiving your SSL cert from your authority of choice to installing it in apache. I've chosen to Apache since it is the most common web server on Linux and the Inter ...

Filed in: Cloud Servers

Password Requirements for Cloud Sites

When you create or change an account or FTP password on Rackspace Cloud Sites you will need to adhere to the following requirements: Passwords must contain at least eight characters. The password must contain a mixture of upper and lowercase letters, and ...

Filed in: Cloud Sites

Requesting Additional IPv4 Addresses for First and Next Generation Cloud Servers

Rackspace offers the ability to add IPv4 addresses to Cloud Servers in our first-generation and next-generation cloud environments for a fee. If you wish to obtain an additional IPv4 address for your server please open a ticket through the Support section ...

Filed in: Cloud Servers

Introduction to Firewalls

To understand what exactly a firewall is, it is necessary to first understand what the Internet is. The Internet is, simply put, a web-like network of computers -- nothing more, nothing less. Some computers (like your laptop) specialize primarily in clien ...

Filed in: Cloud Servers

Generate a CSR with OpenSSL

This article will go through the first step of creating and eventually installing an SSL certificate. You'll use the same steps whether you are getting a traditional SSL from an authority like Verisign, a self signed certificate or the '*' ...

Filed in: Cloud Servers

Introduction to iptables

IP tables is a firewall and networking tool available to all Linux Distros and operates by analyzing packets at the kernel level as they are received. Contents 1 Introduction 2 The Base Ruleset 2.1 Reading the Ruleset 2.2 Policies 3 Available Options 3.1 ...

Filed in: Cloud Servers

Cloud Security in an Agile World

INTRODUCTION The conversation of “Why Cloud?” has long since passed for many businesses and the question has transitioned into “How Cloud?” and “Is it safe?” The value the cloud brings to a business is measured in many different ways—from speeding innovat ...

Filed in: Cloud Hosting

Can I use RackConnect as a firewall for my Cloud Servers?

Yes, you can. By default the Cloud Servers are directly exposed to the Internet and only the internal OS firewall is available for protection. RackConnect may be deployed as a front-end dedicated firewall to provide a single entry point for public traffic ...

Filed in: RackConnect

What are these "Network Policies"?

RackConnect Network Policies are the equivalent of firewall rules that are applied via the RackConnect web interface. These policies are then applied to the firewall device and any Cloud Servers referenced. The Network Policies are a useful means of centr ...

Filed in: RackConnect

Cloud Files - How do Permissions Work?

There are no permissions or access controls around containers or objects other than being split into separate accounts. Users must authenticate with a valid user name and API Access Key, but once authenticated, they can create or delete containers and obj ...

Filed in: Cloud Files

Can I run a firewall on my server?

Definitely and we encourage it! Each Linux server is capable of running the Linux-standard firewall called iptables - some even have it pre-configured! Other firewall systems have been tested on Cloud Servers as well. To see introductory steps for some of ...

Filed in: Cloud Servers

Why does uploading a file in the Control Panel set the Allow-Origin header on my container?

When you upload a file in the Cloud Control Panel, an Allow-Origin header is set on the container to support cross-origin resource sharing (CORS). Browsers prevent AJAX requests between different domains by default. Because the Cloud Files API and the Con ...

Filed in: Cloud Files

Load Balancing an SSL site with Apache

So this article will be a continuation of Simple Load Balancing and will use extensions from Installing an SSL certificate . What we are going to do is build a load balancer using the skeleton from the last article and encrypt all the traffic from the loa ...

Filed in: Cloud Servers

Mail Server - Secure Connection - Configuring saslauthd

Now that we've configured Postfix to use MySQL , we can begin creating the means to use secure connections with our mail server. We do this by using saslauthd. Contents 1 Saslauthd 2 Editing saslauthd 3 MySQL 4 Users 5 Restart 6 Summary Saslauthd Eh? ...

Filed in: Cloud Servers

Physical Security

Imagine that you've built a house and installed every security tool in the books. Deadbolt locks, burglar alarms, guard dogs... you've got it all. Now imagine that you've left the key under the doormat, the alarm's access code written ...

Filed in: Cloud Servers

Port Knocking

Note: The commands and utilities in this article have been tested on a Debian Cloud Server. They are not guaranteed to function correctly on other distributions. However, the General Package Installation Guidelines article may assist in "porting" ...

Filed in: Cloud Servers

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