networking

Setting up Tor and Hosting a Hidden Service

This tutorial will show you how to set up TOR as a daemon and host hidden services. Hidden services are only available on the TOR darknet and allow you to host services without

cloud

Customizing Digitalocean Floating IPs

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

dns

Running your own DNS with Unbound (and block ads)

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.

networking

Routeable Loopback Addresses

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

firewall

Rate-limiting logging on the Ubiquiti EdgeRouter Lite

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

networking

There's more to localhost than 127.0.0.1

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

sms gateway

Script to send a SMS when IP changes

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)

linux

Using the ss command to view active and established connections

The command known as ss which stands for socket statistics. It is used for listing listening and established connections and to find out which processes and users are associated with them. Finding all

linux

Pretty printing terminal output into JSON/CSV

There is a command called column which allows you to format the lines produced by a command into symmetrical rows/columns, which can then be easily converted into CSV or JSON. This will

dhcp

Network Basics: The DHCP client

So what is DHCP? How automatic configuration works The DHCP client When you bring your laptop over to your buddies house and plug into their network, your internet is ready by "magic&

dns

Converting a Hostfile Adblock into Unbound DNS records

There are lots of places where you can download ad blacklists in the form of simple host files, but they require manual installation on every device. Instead we will make records for our