Show HN: Open Port Checker

http://portchecker.co

by rk0567 • 12 years ago

19 15 12 years ago

portchecker.co

plumeria• 12 years ago

An usability upgrade would be to allow port ranges, for example I wanted to try 0-1023.

rk05674• 12 years ago

I've something like that for TODO. But I'm not sure whether that would be legal or not ?

dsr_2• 12 years ago

What kind of thing is legal to do once but not 65,535 times?

Google for "scan ports" and you'll discover plenty of people offering this service already.

lutusp2• 12 years ago

Legal, yes. Annoying, maybe. You could limit your liability by only allowing scanning of the origin IP, i.e. don't allow the entry of any IP the user wants to enter. That way, the visitor is scanning only his own machine, no one else's.

joeyspn• 12 years ago

Good tool for terminal-averse people, but I still prefer nmap

robobro• 12 years ago

IMO, they could just get Zenmap, anyway.

nwh• 12 years ago

Related is hxxp://portscan.me/ - which does a nmap scan on the requester. Not a click-able just in case people don't read the purpose before clicking on it. Good for quickly finding out if your port forwarding worked (and it never works).

CyberShadow• 12 years ago

How do you plan to prevent abuse? E.g. this website allows someone to portscan another IP without exposing their own IP. Even with a per-IP throttle, someone with a botnet can use this website to effectively portscan any one host without exposing any of their botnet's IPs.

I've been using http://www.canyouseeme.org/ for this purpose. It does have the limitation that it only allows testing the ports of the connecting IP.

rk05674• 12 years ago

Hey, that's a good point. Thanks. I'm still trying to figure out a way for preventing such abuse. Otherwise, I would have to limit the scanning to origin IP.

lutusp2• 12 years ago

Technically, the page checks ports that are accessible on the public side of your local router. That can be very useful in checking one's configuration for errors and unintended vulnerabilities.

Show HN: Open Port Checker

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