De Facto Ports | Hacker News Reader

De Facto Ports

matt-rickard.com

28 pointsTomte12 comments

I don't understand the point of this post. As far as I can tell, it's just a listing of about 30 random ports and their services (which are all unrelated to each other).

Maybe I'm missing something, but I think a trip to https://www.speedguide.net/ports.php or your /etc/services file would be more useful.

Agreed. I'd love to see this kind of blogspam submission get redirected to https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbe...

Would be nice if the author had noted which are reserved vs which aren't, they're mixed in his list. Reserved might be a "formality" but it can be it's good to know which are informal vs. reserved since in some use cases you might want to follow the IANA, and it's generally a good idea to be aware of what rules you're breaking. There's a list here for reference:

https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbe...

It can also be useful because you may be able to be more or less noticed when traversing firewalls.

Freeciv[1] also has a named port (5556) that once caused me a lot of headache because our server was binding to 5556 and nmap reported it as freeciv, which I had no idea about.

[1] https://wiki.wireshark.org/Freeciv.md

1337 for everything... until I installed Kdenlive and realized they were as cool as me, so sometimes 1336 >.>

Also until you realize lots of malware uses that port and many devices and services block that port, causing issues.

Wrong - you're assuming all apps are served over the web, the network firewall is not going to care what port you run on an app on your machine - it only applies to traffic in/out of the network. You better go tell Express.js and all the apps that use 1337 by default they're all doing it wrong, and you know something they don't know.

My external web services are of course served over HTTPS (8443) to external traffic, but there's nothing wrong at all with using 1337 for client-side apps, as I mentioned with Kdenlive (a video editing software that runs on my desktop).

Would IANA assigned ports be "De Jure Ports".

https://www.iana.org/assignments/service-names-port-numbers/...

I use 9001.

https://knowyourmeme.com/memes/its-over-9000

A whole bunch of Prometheus and typical exporters is missing.

Who doesn't use Prometheus nowadays?

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