https://blogs.damiendye.uk/en/tags/python/ Recent content in Python on Damien Dye's Blog Hugo en-GB Fri, 28 Aug 2026 09:00:00 +0100 https://blogs.damiendye.uk/en/networking/how-far-away-is-the-firewall/ Fri, 28 Aug 2026 09:00:00 +0100 https://blogs.damiendye.uk/en/networking/how-far-away-is-the-firewall/ A connection that times out tells you nothing about where it died. TTL does. Here is how to count the hops to whatever is eating your port, on Linux, macOS, the BSDs, Solaris and Redox, with a script that needs no root on Linux.