Bliss, Asfaleia kai Rizes.

[Alexios Chouchoulas]

  Merikes aples symboules gia osous fobountai gia ton Bliss kai peri
asfaleias genikotera.

* MHN XRHSIMOPOIEITE TON ROOT AN DEN EXETE  P O L Y  SOBARO LOGO.

        Superuser access is not funny. O logos pou den yparxoun ioi gia Unix
        (ta trojans den einai ioi) einai oti o monos tropos na kaneis
        alithinh zhmia einai na exeis superuser privileges. Se ola ta
        unixosysthmata pagkosmiws o root einai kleidwmenos sto mpountroumi
        kai bgainei mono gia mia dyo entoles otan einai teleiws aparaithto.
        Alla sto Linux polloi kanoun ta panta ws root. Kako pragma. Ena
        <enter> parapanw kai exete xasei to disko sas. Akougetai hlithio,
        alla exei symbei se olous, toulaxiston mia fora (stis dikes mou
        periptwsh hmouna tyxeros, eixa backups -- kai otan den eixa katafera
        na kanw undelete to xameno arxeio apo katharh tyxh). Not funny.


* MHN AFHNETE TON ROOT NA DEXETAI H NA STELNEI EMAIL.

        Eiserxomena email prepei na phgainoun se kapoio allo account. An
        xrhsimopoieite sendmail, ftiaxte ena alias sto /etc/aliases (einai
        poly aplo, exei odhgies mesa) kai meta dwste sendmail -bi.

        Pote ma pote ma pote mhn stelnete mail ws root. Xrhsimopoihste ena
        apo ta alla accounts sas, h ton postmaster an exei na kanei me mail
        delivery.


* MHN DINETE PERMISSIONS SE ARXEIA/DEVICES SE KANENAN POU DEN PREPEI NA
  EXEI.

        Fainetai arrwsthmeno, alla kalytera na kratate orismena accounts
        makria apo kapoia arxeia/binaries/directories/devices. Px, mporeite
        na kopsete thn prosbash sto modem sas ftiaxnontas ena group "modem"
        kai kanontas chmod 660 /dev/modem; chown root.modem /dev/modem.
        Etsi, mono opoios anhkei sto group "modem" tha exei prosbash. To
        idio mporeite na kanete gia floppies klp.


H asfaleia twn systhmatwn mas exei parei defterevousa shmasia (tritevousa,
isws) me to skeptiko oti kanenas den tha mas ta xakiasei. Alla meta ton
Bliss tha erthoun ki alloi ioi. Kai kanenas ios den mporei na kanei zhmia
xwris access sto systhma -- to unix mporei na einai kalo apo plevras
asfaleias. Arkei na dwsete kamposh prosoxh. Yp'opsin: ta default systhmata
opws egkathistountai apo ta distributions einai ahdiastika anoixta pros
kathe epithesi.

Alexios Chouchoulas          '88    ,88'   ,88'     alexios at vennea.demon.co.uk
The Unpronouncable One      ,o88oooo88ooooo88oo,              axc at dcs.ed.ac.uk

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