KERMIT OVERVIEW / UUASC 10 SEPT. 2001

  ssh

  scp

  expect

  srp-telnet

  ktelnet

  telnet

  rlogin

  tip

  cu

  some modes of Lynx

  some modes of w3m

  minicom

  pcomm

  seyon

  ftp

  chat

  yes

  talk

  sz/rz  ( z-modem )

  ob/rb  ( y-modem )

  sx/rx  ( x-modem )

  rcp

  etc....

      0) brief history



        a) origins

           http://www.columbia.edu/kermit/dec20.html#kermit

        b) Kermit Center

           http://www.columbia.edu/kermit

           http://www.kermit-project.org


     1) Pro's and Con's


        

        
 What it is

        
 Myths about kermit

           http://www.columbia.edu/kermit/kermit.html#Misconceptions

        

     2) Implimentations of Kermit protocol


        

        
 MS-DOS Kermit

        
 C-Kermit

           

           
 available for *all* known versions of UNIX

              http://www.kermit-project.org/ck80.html#download

           
 Comes standard with HP-UX  (others?)

           
 various other OSs: VMS, Stratus VOS, OS/2 etc.

           
        
 Kermit-95 (Various Windows versions, OS/2)

             http://kermit.columbia.edu/k95.html

        
 G-Kermit

             http://kermit.columbia.edu/gkermit.html

        
 IKSD

           telnet://kermit.columbia.edu:1649

        
 Misc.

           

           
 IBM mainframes

           
 8-bit 'classic computers'

           
 etc....

           
        
 Platforms lacking some Kermit version, or with weak support

           ( #e is a short list :-) )

           IBM AS 400

           older Mac OSs, support tenuous

        

     0) purpose



        

        
 put file transfer into a context

           

            
 modes

                 ^\-C, alt-X, C  vrs. ^[

           
 'help'

              '<command> ?'

              'set ?'

              ckermit.ini

              ckermod.ini

           
 set port/speed/modem

               set network type .....

           
 set host ....

                dial {{#1} {#2......}

           
  connect ...

           
 OR  telnet/rlogin/etc

           
 'hangup',  'close connection'

           
        
 scripting language

           

           
 '#!/path/kermit +'  scripting
                 http://kermit.columbia.edu/case02.html

           
 '#', ';', 'REM'  commenting
           
 'define', macros, variables etc.

           
 'take'

           
 input 15 ....

                output 15 .....

                and variations of these

           
 IF success/failure .....

           
        
 mission creep

           reason for G-Kermit

        


      1) protocols it supports



           set protocol ....

        

        
 Kermit

            send  / receive commands

        
 text dump/capture

            Transmit / log session

        
 HTTP

            HTTP get, etc.

        
 FTP

            FTP open, get, put etc.

        
 external protocols

            redirect  sz....

        


      2) Networks it supports



        

         
 physical serial connections

           

           
 direct

              set port /dev/ttyS0

              set speed 28800

           
 via Modem

               set modem type ....

           
  initiating network connections

                 redirect pppd

                 run   nohup  pppd <&\v(ttyfd) >&\v(ttyfd)  &

                 exec /redirect pppd

                 http://kermit.columbia.edu/faq-c-exit.html#faq-c-exit

           
        
 virtual serial connections

           

           
 TCP

              set network type tcpip

           
 LAT, X.25, NETBIOS, Named Pipes, etc.

           
 Standard I/O

                set network type pipe

           
 Pseudo Terminals (PTY's)

               set network type pseudoterminal

               set host lynx ......

                   or

               pty  lynx ....

           
        


      3) Security issues



        

        
 weaknesses/dangers of ssh

        
 Kerberos, SRP, SSL/TSL, (SOCKS) support

        
 ssh support

             http://www.columbia.edu/kermit/case11.html

        

           http://www.columbia.edu/kermit/ftpd.html

           http://www.columbia.edu/kermit/security80.html

           http://www.columbia.edu/kermit/ckfaq.html#ssh

      0) http://www.columbia.edu/kermit




      1) news:comp.protocols.kermit.misc




      2) 'Using C-Kermit Communication Software'


         
         Frank da Cruz / Christine M. Gianone

         (C) 1997

         ISBN 1-55558-164-1

         (Dark cover, not orange)

         Supplemental files:

         http://www.columbia.edu/kermit/ckermit2.html  (ckermit2.txt)

         http://www.columbia.edu/kermit/ckermit3.html  (ckermit3.txt)


         
     3) Various other books

        http://kermit.columbia.edu/manuals.html




     4) 'C-Kermit: More than Just a File Transfer Protocol'


        
        Jim Dennis

        7 July 1997 'Sys Admin' Vol. 6 #7, pp. 19 - 25

        

     1) Like SQL, EMACS, etc.

        it probably will not get you a job,

        but does get your work done.