3.5 Services

service= port + protocol (TCP,UDP)// messagerie (mail)= port 25 TCP

[buffat@ufrmeca Cours]$ telnet mecalpha 25
Trying 134.214.95.86...
Connected to mecalpha.univ-lyon1.fr.
Escape character is '^]'.
220 mecalpha.univ-lyon1.fr ESMTP Sendmail 8.8.7/8.8.7; Wed, 22 Sep 1999 01:00:39 +0200
helo mecalpha
250 mecalpha.univ-lyon1.fr Hello buffat@ufrmeca [134.214.93.120], pleased to meet you
......

1. ssh nom@hostname
   

   connexion sécurisée
   [buffat@p2chpd-visu2]$ ssh buffat@athena.mecaflu.ec-lyon.fr
   buffat@athena.mecaflu.ec-lyon.fr's password:xxxxxxx
   Last login: Thu Jul 10 09:46:01 from lns-th2-10-82-64
   Digital UNIX V4.0D  (Rev. 878); Mon Dec 13 15:29:15 MET 1999
   athena.mecaflu.ec-lyon.fr>exit
   athena.mecaflu.ec-lyon.fr> logout
   Connection to athena.mecaflu.ec-lyon.fr closed.
   

2. telnet “hostname”
   ancien mode de connexion (non sécurisé)
3. scp user@host1:fichier1 fichier2
4. scp fichier1 user@host1:fichier2 transfert de fichier sécurisé

   scp lstree.txt buffat@athena.mecaflu.ec-lyon.fr:toto.txt
   buffat@athena.mecaflu.ec-lyon.fr's password: xxxxxx
   lstree.txt       100%  206   962.5KB/s   00:00
   

5. ftp “hostname”
   transfert de fichiers (non scurisé)
6. mail : messagerie
   envoi (en général avec un client)

   [buffat@ufrmeca COURS_UNIX]$ mail buffat@mecapar.univ-lyon1.fr
   Subject: essai mail
   Hello,
   essai de mail
   Marc
   ^D
   Cc: buffat
   

   reception

   You have mail in /var/spool/mail/buffat
   [buffat@ufrmeca COURS_UNIX]$ mail
   Mail version 8.1 6/6/93.  Type ? for help.
   "/var/spool/mail/buffat": 1 message 1 new
   >N  1 buffat@ufrmeca.univ-  Wed Sep 15 14:12  16/439   "essai mail"
   & q