CentOS Linux is a Linux distribution is an enterprise OS platform compatible with its source RedHat Enterprise Linux (RHEL). Its end of life was announced for December 2021.
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pfSense
Score 9.2 out of 10
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pfSense is a firewall and load management product available through the open source pfSense Community Edition, as well as a the licensed edition, pfSense Plus (formerly known as pfSense Enterprise). The solution provides combined firewall, VPN, and router functionality, and can be deployed through the cloud (AWS or Azure), or on-premises with a Netgate appliance. It as scalable capacities, with functionality for SMBs. As a firewall, pfSense offers Stateful packet inspection, concurrent…
In any role where you need raw server power, CentOS Linux is extremely well suited. It is extremely stable, and in my experience, probably the most stable of the Linux distros available. It has a very wide base of support from 3rd party sources for additional functionality that do not come already in the CentOS Linux distribution itself. It is not as appropriate for situations that are customer facing or end user facing. For those, I recommend Ubuntu Linux. But for everything server & compute related, I recommend CentOS Linux.
Because pfSense is built around open source software, it is very convenient to be able to deploy in the event of hardware failure. We once had a client with a proprietary router that failed. While the router was under warranty, the expected time for the new router to arrive was about 2 weeks. We decided to implement pfSense for the client as a stop gap and ultimately ended up deploying the full enterprise appliance. Being able to get up and running using commodity hardware was a huge win for the client. We've also had a great amount of success deploying pfSense hardware at apartment complexes. The DNS resolver works great and we've had no issues handling multiple VLANs with various DHCP scopes on it. Finally, we've had clients that require having a failover cluster. Utilizing the built in CARP capabilities, we've been able to provide a very robust failover system that requires little maintenance and no downtime in the event of equipment failure.
Easy to use. Good user interface design! Easy to understand and easy to set up.
Lower hardware requirement. 3 years ago, we used an old PC to run it. Now, we have changed to a router device with Celeron CPU and 8GB RAM. It runs smoothly with a 1000G commercial broadband.
I did kind of mention a Con in the Pro section with OpenVPN.
When I create a config for an employee other employees are able to login to that config.
I could be doing something wrong when I am making it - I am not afraid to admit that as I am pretty new to all of this, but it seems like it builds a key and I would think the key would be unique in some way to each employee, but I could be wrong.
I actually do not have a lot of Con's for this software - I did not get to set this up on our work network so I am not sure of any downfalls when installing.
I installed this on my personal machine in a Hyper-V environment to get a feel for it before I started working on it at work and it seemed pretty smooth. I didn't run into any issues.
Again, written documentation is excellent, even on the older versions. The support community is the best. It is comprehensive and I would say that it global because it transcends national boundaries. Also, you find all types of people using CentOS to do all sorts of things so you are bound to find someone to talk to if there are problems.
CentOS is based on RHEL, so it really came down to the costs when making the selection between our options. RHEL offered more support and features, but nothing that we specifically needed. CentOS is fully customizable, something Windows Server was also lacking in many ways. The stability and speed was unmatched in comparison to Windows, and we were not utilizing any Windows-specific software to require us to use the Microsoft alternative. My years of experience have also made it a breeze to set up and configure new CentOS instances, leading me to stay where I'm comfortable.
While you can get the performance out of other products, pfSense offers the unique ability to put other services on the same device. Products such as Untagle's NG Firewall and SonicWall's TZ series offer cost effective options for firewall and VPN services, having incoming load balancing and connection proxies on the same device as the firewall offers extremely easy configuration and day to day management of network services
CentOS's support of RPM packages makes it very easy to replicate RHEL servers for development or testing in cheap / free environments
CentOS's minimalistic desktop environment requires additional tweaking / packages if you want to have a usable desktop environment with the niceties of other modern distributions. As a result, if developers want to use CentOS, they'll need to spend more time customizing it than other distros.
CentOS's easy customization from the command line lends itself well to our virtualization infrastructure where setup can be easily scripted to modify CentOS's configuration files.
Using pfSense has allowed us to build a professional network in our small office without needing a lot of proprietary hardware, saving thousands of dollars in IT infrastructure investment.
The cost for using pfSense is free, so it's a great option for those who don't have a large IT budget
pfSense utilizes all of the industry standard services to provide all of it's functionality, so support for service-level issues is readily available
Because of how much work has been put into pfSense to make it rock solid and reliable, we're able to support our network with minimal IT staffing, saving us thousands of dollars/year in personnel alone.
