Відео

Invitation/registration codes are for specific courses (offered by specific teachers) and only last for a couple of weeks. This is just a demo video. If you live in Virginia and a part of a public school, then talk to your school/instructor about getting your class a free account on the Cyber Range. If you're outside of Virginia, then reach out to usCyberRnage.org about setting up a paid account with us.

If you do not live in Virginia.. then contact the USCyberRange.org on purchasing services.

vi IS vim... $ which vi /usr/bin/vi $ ls -la /usr/bin/vi lrwxrwxrwx 1 root root 20 Sep 15 2022 /usr/bin/vi -> /etc/alternatives/vi $ ls -la /etc/alternatives/vi lrwxrwxrwx 1 root root 17 Sep 15 2022 /etc/alternatives/vi -> /usr/bin/vim.tiny

OK, got it@@VirginiaCyberRange 🙂 I always thought that 'vi' meant the original 'ex' editor in visual mode. But fully understand your point. It's more that all trainings nowadays seems to use the name 'vim' and not 'vi'. Thanks for answering me and best of luck. /ben

@@benarcher372 Yeah.. vi is still a real (separate) project on other UN*Xes.. but on all modern UN*X clones.. vim/vi/nvim is the standard. There's a deep and confusion hisotry of vim/nvim, vi and ex though.. see here: vi.stackexchange.com/questions/341/what-is-the-relation-between-vi-nvi-and-vim Short of it.. if you're an IT professional who works on Linux/UN*X systems, you need to know basic vi syntax. If you paid to ressurect dead system or fix off line systems with failed RAID arrays or the like.. or even cloud VMs in console single user mode.. and all you have the default system editor (vi/vim).. then you better be ableto do your job and not have to have some easy or convenient tool like nano, pico or <gag> EMACS.

Hey Diana! So if you're a student in the state of VA, then speak with your instructor or faculty member who has a Cyber Range account and they can invite you to a course. The course above was just a demo course from 2019. If you're in VA, and none of your faculty have access to the Cyber Range, just apply for a free account here, and click "Sign Up": www.virginiacyberrange.org/ If you're not a VA faculty educator, then all other states and orgs need to apply through the US Cyber Range here: www.uscyberrange.org/ Either system, schools and educators apply, and send course invites out to students. Students never directly "sign up" at the Range without an educator inviting them. More information on this is here: kb.uscyberrange.org/faq/us-what-is-cyber-range.html Cheers! T.Weeks Cyber Range Engineer

Traditionally... yes.. SMTP is for "Transferring" email.. and POP/IMAP is for accessing/reading email (though I hope no one is still using POP), though there are some IMAP-sending custom services out there (www.courier-mta.org/imap/INSTALL.html#imapsend).. But yes.. looking at email headers, you're going to be diagnosing SMTP servers, DNS, filtering, etc.

Ahh.. I see the confusion. His network diagram is not the greatest. It shows the client accessing the email via webmail, and he has it listed as "IMAP/HTTP" (or webmail).. which is mainly talking IMAP (between the webclient and the mail server) and mainly HTTP to the physical client/browser. Sending email (from a web client) is using HTTP to compose and click send), and then it goes out by SMTP. I think he's also confused bc he's mixing IMAP and Outlook/Exchange, which uses MAPI over HTTP (docs.microsoft.com/en-us/Exchange/clients/mapi-over-http/mapi-over-http?view=exchserver-2019) which CAN both send and receive messages.. but still sends outside itself via SMTP (unless talking to other systems in its own Exchange site).

We have tons more content.. Let us know if there's anything you would like covered.

lol

@@luizandre12345 the presenter is a massive time waster. If he called the UA-cam video "lecture on..." would have at least been more accurate (i.e know what to expect). So glad he is not my university lecturer, seriously would not watch any of his lectures, after seeing how he conducts the first one.

😂😂 LOL.. Thanks bro, You saved my night...😑❤

thanks man lol

Each CTF is different.. and they usually have a specific start and stop date (like a hack-a-thon). After a CTF ends.. we usually keep the final scoreboard up so teachers and participants can show bragging rights. Fore more info on getting your own CTF set up.. see: kb.virginiacyberrange.org/cloud-ctf.html