The last quarter of 2020 is behind us, which means it’s time for another look at some of the interesting ports accessible on public IPs. This time however, we will take a look at how the internet changed during the whole of 2020, not just at the past 3 months.
I would especially like to bring to your attention the steady decrease in ICS systems connected to the internet during 2020. Although Shodan still sees almost 100k of IP addresses running services communicating using industrial protocols, it is over 30k less then it saw at the beginning of the year.
As always, the data, on which the following charts are based, have been gathered using Shodan. Therefore bear in mind that although the charts should give us a good enough view of more significant changes, they may not be completely accurate (see the first post with quarterly statistics.
Should you be interested in the port situation in the Czech republic, you may find corresponding charts here.
Bellow, you may find charts for the following protocols and ports:
- SSH (port 22)
- Telnet (port 23)
- DNS (port 53)
- NTP (port 123)
- SNMP (port 161)
- SMB (port 445)
- RDP (port 3389)