Port Forwarding Explained + The Risks You Need to Know

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Port forwarding is when we tell our router where to send a request based on the port number within the message.

For example, we could configure a rule that says: any traffic received using port number 3389, forward that traffic to our computer, which has the local IP address 192.168.1.10

If our router were to receive a request with that destination port number, it would look at the IP address, think, “Yes, that’s me,” and then look at the port number. The router will check its port forwarding rules and forward that request to our computer.

So, the traffic is forwarded based on the port number, hence the name port forwarding.

While this is pretty simple to set up, it can be risky. Any ports you open to the Internet will likely be attacked. Keeping everything secure is very important when using port forwarding.

00:00 Into to Port Forwarding
00:22 A better way
01:38 What are ports?
04:04 Public and private networks
04:44 How port forwarding works
06:14 How to configure port forwarding
10:41 Security risks
12:19 How to secure open ports
13:14 Summary

[Certbros]

Always take care when opening ports to the public internet! Stay safe.

[TalhaCS]

Explained like a boss, no confusion, no noise, pure knowledge!

[anthonyb]

That was the best explanation I’ve seen to date.

[jorgezayas]

Finally a simple video explaining port forwarding, thank you! 👍🏼

[edunicksecurity]

This guy explains every concept with absolute precision.

[JoshJeem]

Thanks Cert Bros.... your explanation with simple animations, and easy to follow language was great! Better than these people who rush through their explanations and leave other lost.

[Nerzhina]

Hi. Please continue making these excellent cybersecurity & networking video tutorials.

Best wishes CertBros.

[rwagasanay]

This video was very helpful. The way he explains is straightforward and easy to understand. I like it. Thanks

[SukunasChiChis]

Thank you for transparency regarding sponsored content (:

[NunoMartinsGalvao]

What was the honeypot you used ? If you have a link for it or source code available online would be great.
BTW great content😀

[jeremylindemann]

I'm a bit unclear on the distinction between routing and NAT, whether they're the same thing or different.

With port forwarding, does the source IP from outside the network stay the same (ie. 83.24.123.2 from your example) when sent into the private network or does the external IP get translated into an internal IP for the destination computer?

Also, if you forward a particular port number does that port become unavailable for all other computers within the private network?

[kirostar]

What about if I want to connect to multi desktops like 4 machines from outside? I guess every time I need to change the port to each individual machine?

[mehd-qw]

make a video about Difference between Tokens and Cookies

[MrRossss]

When you say you need a strong password, is that the password to your pc or the routers password or services password? Thanks great stuff.

[farhad]

how to know the two ip addresses (external and internal) of my router???

[GauravKumar-ph]

09:39 What if one needs to access 2 computers connected to my router on the same port at the same time how will that happen ?? or how to port forward that.

[riufq]

8:38

Hope their explanation about WAN and LAN.

I know the acronym. But, i like your explanation better.