Internet scanning, Latencies, Internet satellites make astronomers angry, Encrypted Client Hello canot be disabled on Chrome, New compression techniques, Cryptography 101, your Smart TV probably spies on you, round robin DNS, OVH failure
Internet scanning is the act of transmitting packets to remote hosts to determine whether they listen on specific protocols or ports. Researchers have used scanning to understand the deployment of new services on the Internet. Attackers have used scanning to detect vulnerable hosts which could be compromised. In the early 2000s, it was difficult to quickly scan the entire IPv4 addressing space. nmap made it simple for network administrators to detect servers in their network. Nowadays, with software such as zmap, anyone equipped with a 10 Gbps interface can quickly scan the entire IPv4 addressing space for various purposes. A recent article analyzes the evolution of scanning during the last decade. During this period, Internet scanning has increased 30-fold. Since 2020, the growth is not anymore exponential, but the scans are spread over the entire port range.