Telnet commands

To find the live pc's on network run the ping and nmap as:

ping -b -c 3 -i 20 broadcast_address
nmap -sP 175.106.57.1-254

Then run the nmap for each ip to get the details of that ip:

nmap -O -A ip_address

Get web page with telnet

Telnet on port 80 of web server, when connected run the get command to get the web page for example to get officers.html:

telnet www.tutorialsteam.plus.com 80
GET /officers.html HTTP/2.0

2.0 is the HTTP version.

Send mail with telnet

Connect to the smpt port 25 with telnet, then run these commands:

telnet mail.server.tld 25

2. Introduce us in SMTP server

helo host.mydomain.tld

3. Send email address of the sender

mail from: [email protected]

4. Send email address of the recipient

rcpt to: [email protected]

5. Let's go with body to the message

data

6. Send Name and Email adress of the sender
From: John Smith <[email protected]>

7. Send Name and Email address of the recipient

To: [email protected]

8. Next Subject of the message

Subject: nesto alabala

9. Continue with the message

text text
text text text

10. Let's say to SMTP server to send the message (??? YES this is only DOT???), When you finish your e-mail, press [ENTER], then a '.'(dot), and again an [ENTER]. This tells the server that you have finished the e-mail, and it can send it.
h6 class="w3-text-blue"> 11. Close telnet session

quit

Connecto to POP3

telnet pop3.myisp.co.uk 110 USER fred
PASS laRge1
+OK fred has 34 visible messages (0 hidden) in 764695 octets.

means fred has 34 messages which are 764695 bytes (octets).

stat

show total messages with their size in bytes.

list

will list the messages with thier size.

top 4 20

The top command will print the 4th email with it's 20 first lines,To see just the header and nothing from the body, use TOP 1 0.
To view a message in its entirety, use the RETR (for retrieve) command;

RETR 1

To delete a message, use the DELE (for delete) command;

DELE 1

When you are done, use the QUIT command;