To introduce the TELNET protocol and show how it implements
local and remote login using the concept of network virtual terminal.
❑ To discuss options and suboptions used in TELNET and how they are
negotiated.
❑ To define out-of-band signaling and how it is implemented in
TELNET.
❑ To define different modes of operations in TELNET and their
efficiency.
❑ To introduce SSH as an alternative to TELNET.
❑ To show how different components of SSH are combined to provide
a secure connection over an insecure TCP connection.
❑ To discuss port-forwarding in SSH and how it can be used to provide
security for other applications.