[Setting up CEH Laptop]

Don't install linux on your macbook HD! I recommend you to install Kali on a Virtual Machine

[Most secured and private tools.]

Your best tool for security is yourself...

[HP Printer Serial Number]

https://support.hp.com/us-en/document/c04559742

[arp across a firewall after vpn]

https://forums.hak5.org/forum/94-packet-squirrel/

[Can someone explain to me about DDoS and DoS .. And any tutorial about it?]

The  diference is: A DoS (Denial of Service) is a single machine attack, and DDoS (Distributed Denial of Service) is a multi machine attack that can use botnets. An DoS attack can have multiple purposes, so for a good tutorial google it

[Any good CVE list?]

I'm looking for a good list of easy to explore CVE's to begin learning about exploit creation.

[(Need Help) Payload that gets not detected by Antivirus]

10 hours ago, Nikkkk said:

I am making the payload which is working for only one device by metasploit inpersistently...msfvenom command..

What modifications should be done to make it work on multiple devices with persistency???

https://www.offensive-security.com/metasploit-unleashed/meterpreter-service/

[Kali Rolling Eating Router Scan]

Did you try to following the instructions for Debian?

[Installing WPScan on Kali Linux WSL]

Try to run

bundle install --path vendor/bundle

[Public networks MITM attacks]

Thank you for the help!

[Public networks MITM attacks]

What is the best way to protect me against MITM attacks under a public network?

[Pen Testing in Japan]

As far as i know in Japan is not prohibited to you buy these tools btw using it can be  privacy invasion or anything else... Is best to you search about Japanese cybernetic laws

[(Need Help) Payload that gets not detected by Antivirus]

You use payload in Metasploit not create a payload. You can use some encoder like shikata_ga_nai or some badchars to bypass some anti virus.

[What is Your Favorite EA Games?]

The sims and Need For Speed

[Port Scanning is illegal?]

Port scan any server is illegal?