test udp connectivity
On server side: On client side: Also on client side in another terminal: It should return something like CONNECTED
Tag: telnet
ClamAV remote scan command
Try telnet $SERVERIP $PORT Type zINSTREAM …
SMTP | ask a server he is serving a domain
echo “VRFY $DOMAIN\nquit” | nc SMTP.MYSERVER.TLD 25
Scripting SMTP with netcat
(echo EHLO $USER@$HOSTNAME sleep 1 echo MAIL FROM: $USER@$HOSTNAME sleep 1 echo RCPT TO: $EMAIL_TO sleep 1 echo “DATA From: $USER@HOSTNAME To: $EMAIL_TO Subject: $EMAIL_SUBJECT $EMAIL_DATA” sleep1 echo ‘.’ sleep 1 echo QUIT) | netcat mailserver.somewhere.org 25
bytes and bones 