Digitalocean allows, for free, the option to add an additional IP address to your virtual machine ("droplet"). These floating IPs are similiar to Amazon AWS Elastic IPs and are tied to your account and location, rather than any specific instance This means that when an instance is destroyed,
Today we will learn how to create your own recursive DNS server using Unbound. This will improve performance through caching. We will also look at ad-blocking.
Today we will learn about loopback addresses that can be reached from the outside via routing. This is useful for running services on a router In a previous post, I talked about the loopback interface and how we can locally bind services to any address in the range 127.0.
The Ubiquti Edgerouter Lite has an iptables based firewall. For each firewall rule (and named set of ules) there is a is an option to enable LOG. Unsolicited traffic to tcp ports, especially ssh, telnet is very common and so our log gets quite large, rather quickly. On a device
The loopback interface is most familiarly encountered as 127.0.0.1 and is referred to as the local loopback address. This address is present on every IPv4 host and is given the hostname localhost. What people either don't know or seem to forget is that on the lo interface,
So this is one application of the SMS gateway. My home internet gets its address via DHCP, however, unless something goes wrong, the addresses are usually reasonably persistent (generally at least 10 days). I was motivated to set this up because when my ISP was having connectivity issues, it was