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[Peter Surda]

On Wed, Apr 28, 2004 at 04:34:49PM +0200, Dalibor Straka wrote:
> Mam takovy napad, ktery by mel fungovat
> 
> prichozi traffic presmerovat na loopback/dummy, tam ho voshapovat a poslat
> dal. Tim padem se jednou objevi jako odchozi a uz se muze nasadit HTB
> kteremu se da rate 1kpbs ceil <maximum>kbps.
Presne taky napad som uz niekolkokrat mal, ale podla mna to stroskota na
nejakej somarine. Zvazoval som loopback, tuntap, pptp, ethernetovy loopback a
virtualny ethernetovy adapter (to posledne sa vola nejako inac ale neviem sa
teraz k tomu dogooglit).

Podla mne pojde len ten ethernetovy loopback (teda pichnes do compu 2
ethernetove karty navyse a spojis ich crosspatch kablom, linux ma na to nejaky
patch aby to fungovalo), ale to ocividne pozaduje dodatocny HW a je to "take
divne". Ale vyzera to hackersky :-).

> Pokud v tom neni vylozene logicka chyba, je to jednoduche a i bych nejak
> z hlavy vedel jak to napsat.
Dam ti hned par uloh na dumanie (netvrdim, ze nemaju riesenie, ale ze to nie
je trivialne):
- ako spravis routovaciu tabulku?
- ako "prijmes" paket dvakrat?
- ako spravis aby to spravne fungovalo oboma smermi?

> -- Dalibor Straka
S pozdravom,

Peter Surda (Shurdeek) <shurdeek na routehat.org>, ICQ 10236103, +436505122023

-- 
 "What happens when you read some doc and either it doesn't answer your
 question or is demonstrably wrong? In Linux, you say "Linux sucks" and
 go read the code. In Windows/Oracle/etc you say "Windows sucks" and
 start banging your head against the wall."    - Denis Vlasenko on lkml