What is an RFC1918 address? An RFC1918 address is an IP address that is assigned by an enterprise organization to an internal host. These IP addresses are used in private networks, which are not available, or reachable, from the Internet. In fact, one of the basic requirements of the Internet…
Let’s consider the following scenario: you have a Linux host that has more than one network interface, both are routable and both are up and running. How do you determine which interface or route is used when trying to reach another host? In other words the routing table looks like…
I am thrilled to announce that NetBeez was identified as a High Performer in G2’s Winter 2020 Network Monitoring grid. NetBeez was also included in the Top 20 Network Monitoring Software list, holding position number 13, as well as, in the Top 20 Easiest To Use Network Monitoring Software list,…
This is the last of four posts related to dnsmasq; it covers the basics on how to set up your own DHCP server on your network. For reference, here are the previous dnsmasq posts on DNS caching, a read-only TFPT server, and DNS server. Set Up To install dnsmasq you…
Network Troubleshooting When troubleshooting network problems, it’s very important to keep theOSI model in mind and work your way up from the physical layer to the application layer. This bottom-up approach helps to successfully troubleshoot network problems because each layer relies on the lower one to function properly. In this…
In two previous blog posts we talked about Dnsmasq’s DNS caching and read-only TFTP server set up. Continuing with a third dnsmasq-related post, we’ll talk about how to set up a DNS server in your network. Set Up Literally, all you have to do is install dnsmasq on a host:…
Traceroute is an IP utility that is used to list all the routers (or “routing hops”) that are between the source host that issues the command and the destination host that is passed as argument. For each router, the command returns its IP address, Fully Qualified Domain Name (FQDN) if…
Service Assurance (SA) for telecommunication networks is defined as the set of processes and policies in place to verify that network services meet predefined Service-Level Agreements (SLA). Service assurance is typically enforced by using one or more network monitoring tools to constantly perform checks and tests against network services and…
In a previous post we talked about dnsmasq’s DNS caching capabilities. Here we’ll talk about the Trivial File Transfer Protocol server included in the dnsmasq utility. Note that this is a read-only TFTP server, and the reason it’s included in dnsmasq is that if you combine it with its DHCP…
We are happy to announce the launch of WiFi connection timing as part of NetBeez release 3.0. Timing WiFi Connections WiFi Connection Timing reports the time that it takes for a WiFi client to associate, authenticate, and acquire a dynamic IP address (DHCP lease). The WiFi connection data is collected…