TTL refers to Time To Live for a DNS server. You may find that your server’s default TTL is quite long, perhaps even 48 hours. This means that any changes to DNS zone files will take up to 48 hours to propagate to users. Because that can be very inconvenient when you want to change […]
If you have been following our Ubuntu server series, you have learned how to setup a LAMP server and configure an APF firewall. In order to do any of this, you likely already had your networking configured correctly, but if you do not, this brief tutorial explain how to setup name servers and ensure they […]
When your server suddenly stops functioning the way it is supposed to, there are a number of troubleshooting techniques you can try. One of the most important things you can do is backtrack and investigate to see if some changes you recently made might have caused the server to stop working. If you discover irreparable […]
As you delve into the world of dedicated servers, you will encounter a mountain of terminology. You might already be familiar with some, but others may leave you scratching your head. The following network terms are frequently used in all types of networking and also in web hosting in particular.
TCP – Transmission Control Protocol or […]
Whether you have your own data center or intend to use the facilities owned by another company, monitoring is something that should be on your mind. Just as a server needs routine monitoring to make sure it is running smoothly and free from threats, data centers should also have sophisticated monitoring systems in place.
When shopping […]
In the second post of our “Back to Basics” series, we will take a look at server networking. Generally speaking, as a system administrator, you will not have to worry about the actual networking infrastructure. If you have an in-house server, your company will likely hire someone to establish connectivity, and if you are renting […]