Send mail via telnet

      telnet remotehost.domainname.com 25
      220- remotehost.domainname.com Sendmail 940816.SGI.8.6.9/940406.SGI ready at
      Tue, 24 Jul 2001 07:52:08 +0100
      220 ESMTP spoken here
      HELO myhostname
      250 cadsrv1.amec-bkw.amec.co.uk Hello [10.18.254.151], pleased to meet you
      MAIL FROM: testuser
      250 testuser... Sender ok
      RCPT TO: receivername
      250 receivername... Recipient ok
      DATA
      354 Enter mail, end with "." on a line by itself
      THis is a test
      .
      250 HAA05197 Message accepted for delivery
      quit
      221 remotehost.domainname.com closing connection

DNS stuff

      In nslookup:
      server abc.abc.abc.abc (change DNS server in nslookup)
      ls -d domain.com (list all info on domain (sometimes forbidden))
      set type=mx (set query type to MX)

Break command on Cisco Router

       CTRL + Shift + 6 + x

How hackers prevent deleting of warez and folders in Windows

Cisco Password algorithm

Google and alike help you in hacking and spying

Go to a search engine like google and enter those....for example:
  "Index of /admin"
  "Index of /password"
  "Index of /mail"
  "Index of /" +passwd
  "Index of /" password.txt

IPSec Ports and Protocols