5 Easy Ways to Check if a Particular Port is Open (Windows, Mac, Linux)

Find out how to test if an outgoing port is open with the telnet command as well as nslookup, curl, wget, and a web browser. You can check an outbound TCP port with portquiz.net.
00:00 Introduction
00:07 portquiz.net
01:28 telnet
01:57 netcat
02:09 curl
02:27 wget
02:42 Testing closed ports
03:50 What is the largest port?
04:33 Web browser port restrictions
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#portquiz #telnet #netcat #curl #wget

[@sudoalex]

Oracle Cloud VMs come with default IP tables blocking some ports, so even if ufw is not active it'll block some ports by default. This is definitely gonna be very useful next time. I spent like 4 hours only to find out there were IP tables already configured 😂

[@TonyTeachesTech]

Thanks for sharing. Helpful

[@ankitbishnoi4067]

Useful information

[@TonyTeachesTech]

Thanks Ankit

[@rajeshvaidya3659]

Thanks a lot. I wanted to see if I can reach to port 3478 which I didn't know how to do it. Your video helped me !!!! Arigatou gozaimasu. ありがとうございます。

[@eMtheG]

great and hot to test some range of outbound open ports ? not just one

[@harrisandreson]

Thanks, sir for your amazing content, will you tell me that contabo is good for a website?

[@TonyTeachesTech]

IMO Contabo is one of many good choices for website hosting

[@AmanSingh-wy1md]

How to open custom TCP port in AWS EC2 the old method is not working anymore I was able to open any port before but now I can't plz... Make a video on it

[@aarronzh]

i have a question, how can you look through a port range at once to see if they are open or not?

[@bikramghosh3167]

jus use nmap bro

[@myhumblebeginnings]

What can closed port tell us in terms of security? If a port is closed, is it safe from penetration attempt?

[@TonyTeachesTech]

Open ports are a security risk if services running on these ports are misconfigured, vulnerable, or unpatched

[@SteveBriley]

Why are you callling ports that are open and listening for incoming requests "outgoing ports"?

[@munguciwalter5806]

Hi

[@TonyTeachesTech]

Hey