Ethernet + HW address

[Fotis Andritsopoulos]

> > kapoio host einai down, kapoio allo sto idio diktyo mporei na parei thn IP
> > tou kai na 'paijei' den mporei na 'prosteteytei' kapws ??
> >         Thanks.
> > 
> >                 |         Fotis Andritsopoulos           |
> >                 |    Democritus University of Thrace     |
> >                 |        Department of Electrical        |
> >                 |        and Computer Engineering        |
> >                 |        e-mail : fandrit at duth.gr        |
> >                 |     SMS : fotis at obelix.ee.duth.gr      |
> >                 | URL: http://rodopi.cc.duth.gr/~fandrit |
> 
>  Genika ayto pou thes den nomizw oti einai effikto apo tin philosofia
> tou TCP/IP protocol suite kai mono. Ayto giati se ena IP packet i
> ethernet address allazei se kathe hop tou packet pros ton proorismo tou
> , enw i IP address diateireitai mexri ton teliko paralipti (ektos an
> kaneis masquerade) , gia ton swsto entopismo tou route pron ton
> paralipti tou paketou. Etsi ayto pou thes tha eixe noima gia ena
> dyktio opou oloi oi hosts tha apexoun ena hop apo ton router ,kai pali
> tha mporouse na efarmostei mono sta inbound packets ston router.
Telika brhka mia lysh-trick...To Linux pou lew parapanw einai gateway gia
ta pc mesw masq. kai epishs apexoun ena hop apo ayto...To mono pou
katafera einai gnwrizontas thn hardware address tou ka8enos pc,elegxei
ka8e ligo an to /proc/net/arp exei thn swsth antistoixia...An dhladh h IP
192.168.168.x antistoixei ekei mesa me thn HW pou 8a eprepe na
antistoixei....Epeidh ta pc den einai polla, (11) to Linux den trexei RIP
ktl alla exei static routes...Opote an dei oti kapoia IP den symbadizei me
thn katallhlh HW kanei route del $BAD_IP 
Den einai kai oti kalytero alla paizei....

			fOTIS.

>
> Ola ta parapanw isxyoun vasei
tis theorias ... Pithanon na yparxei
> kapoio texnasma na katafereis ayto pou thes me kapoion allo isws tropo.
> Egw pantws den exw kati sto myalo mou ektos isws apo to na e3asfaliseis
> oti sto router sou den tha mpainoun paketa apo interfaces pou den tha 
> eprepe (kathoti IP spoofing mporei na sou kanei kapoios kai apo to 
> internet , oxi anagastika apo to idio dyktio.). Pithanon kai ena
> Proxy firewall na se voithouse (den 3erw ti akrivws thes na
> prostateyseis ) .... :-) 
> 
> 		Good Luck  Manolis.
> -- 
> 
> Sifalakis Manolis  (WILLY)
> e-mail: msifa at ariadne-t.gr
>    tel: +030 01 6544279   
>                         ** ARIADNE-T NOC **
>                           NCSR DEMOKRITOS
> --
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--
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Gia na mathete pos na xrisimopoiite ton majordomo, stilte e-mail
sto "majordomo at argos.hol.gr" me 1 grammi sto keimeno: help
Ta archives tis listas einai sto http://www.argos.hol.gr/lists
Gia opoiodipote problima stilte  e-mail ston owner-linux-greek-users
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