Ta Xrhsima Tutorials Toy Xrhstou Rikoudh Parousiazoyn....

[Kostas Liakakis]

Geia sou Xrhstaki...

"Christos Ricudis" <ricudis at paiko.gr> wrote in message
news:MSGID_2=3A413=2F11.98=40fidonet_9109034c at fidonet.org...
>
> 1) Sthn periptwsh enos VPN me apomakrysmenes 'nhsides', den mporeis na
> ka8oriseis apo poy pernaei to traffic sou kai poios to akouei. Epilektiko
> application-layer encryption se mia tetoia periptwsh einai sxedon adynato.

Kanto mou ligo liana auto. An ta dedomena sou einai kryptygrafhmena, esto
kai apo thn
idia thn efarmogh, ti shmasia exei apo posa hops 0a perasei? An fysika
0eleis na mhn
akougetai tipote apo to VPN sou pros ta e3o tote bebaios kai pas sthn allh
lysh. Ypo0eto
pos auto h0eles na peis e3arxhs. Alla kai pali, den 0a elega thn lysh
adynath, alla ton
administrator hli0io... :-)

> 2) Ease of use. Dystyxws den yparxei akoma kanena ebraios apodekto protypo
gia
> application-layer encryption (should we use Telnet/STARTTLS or SSH?
POP3/SSL or
> POP3/STARTTLS? ktl ktl ktl). To meionekthma bebaia einai oti to encryption
den

Skepsou omos oti ena bug den 0a se 3ebrakosei entelos...

> einai pantoy aparaithto, wstoso merikes fores mporei na diapistwseis oti
sou
> xreiazetai se periptwseis poy den mporouses na fantasteis eks'arxhs (blepe
kai
> to 3)

Murphy muprhy...

> 3) Wireless networks opoy einai apo dyskolo ews adynaton na
> kaneis eykolo access control sto MAC layer. Se megales poleis me deployed
> amateur 802.11 networks hdh kapoioi arxisan na kykloforoun stoys dromous
me
> laptops kai sniffers psaxnontas kapoio diktyo gia na bgoyn ston aera :>

Mpaaa... na se ypoklepsoun nai. Na bgoun ston aera mesa apo sena
apokleietai. 0a to
katalabaines eu0eis amesos. Apla kai mono giati 0a kobotan ena meros tou
diktyoy sou.
Opos kai na to koita3eis, se ena point-to-point dyktyo, mporoun na
synhpar3oun mono
dyo points.

> 4) Pros ta kei katey8ynetai to internet engineering, sto IPv6 to IPSEC
einai
> 'sxedon' mandatory. I love standards [1]

I couldn't agree more. To mono pou me anyshxei einai mhpos to standard
mporei na to
metafasoun oi diaforoi echelon. Asxetos key length. Katalabaineis...

> [1] oxi, de 8elw na ksanakousw thn eksypnada me thn omorfia toy na exeis
toso
> polla protypa metaksy twn opoiwn mporeis na epilekseis [2]

Opos elega parapano, auth h polymorfia (asxetos omorfias kai tsaxpinias klp)
pou yparxei me thn kryptografhsh apo thn efarmogh einai anektimhth.

> [2] ENNOEITAI OTI DE 8ELW NA KSANAKOUSW OUTE THN EKSYPNADA ME TO FORTHGAKI
> GEMISMENO ME MAGNHTOTAINIES.

Hm? :-))))

-K.