route real ips.

[Kekes Stamatis]

mo wrote:

> "I.Ioannou" wrote:
> >
> > mo wrote:
> > > loipon thelo na steiso ena linux router, o opoios tha dinei prosvasei
> > > sto internet se ola ta ola mixanimata ta opoia tha exoun pragmatika ips.
> >
> > Giati na exoun pragmatika ips ? An einai etsi tote ti to theleis to
> > linux ?
> > Anyway kanw ypotheseis gia to ti zitas :
> >
> > 1) An theleis ena diktio me full real ips kai endiameso to linux (akomi
> > den katalaba to giati) prepei eite na xrisimopoihseis allo subnet,
> > eite na spaseis to kanoniko sou se toulaxiston 2 subnets
> > (ena na se sindeei me to internet, ena gia mesa)
> > Apo ekei kai pera to linux apla tha kanei routing (forwarding, oxi
> > masquarading) packets metaksi twn subnets.
> >
> > 2) Alliws -kai apo oti katalaba mallon auto enoeis-an apla theleis
> > kapoia services twn eswterikwn mixanimatwn  na "fainontai"
> > eksw san real IPs (lege me IIS h SQL, auto zitane oi perissoteroi),
> > h akomi kai ena aplo NAT 1 pros 1, tote diabase to masquarade-howto
> > kai psakse gia to programma ipmasqadm.
> >
> > roryt
>
> efxaristo gia tin apantisi,
>
> auto pou thelo na kano einai na antikatastiso kapia cisco routers me
> linux routers, to thema einai oti prepei na diatiriso ta ips ton
> ipoloipon mixanimaton.

Hmmm ego nomizo oti oi cisco einai kalyteroi alla omos mia pou theleis na to
kaneis tha prepei na vries kata proton an to routing ginetai numbered i
unnumbered stous routers sou.
 Se genikes grammes mathaineis tin IP tou apenanti interface kai ti IP eixe o
dikos sou router kai vazeis tin idia sto PPP interface. KAtopin sto ethernet
vazeis tin IP pou eixe to ethernet tou router kai telos sto gateway mixanima
vazeis default route tin IP pou eixe kai o router kai fysika den paraleipeis na
energopoiiseis to IP forwarding.
 Tora oso gia to subnetting os sinithos stp PPP interface vazeis netmask
255.255.255.252 gia na exeis se subnet mono ayta ta interfaces kai sto ethernet
oti netmask eixe o router. Ta pragmata periplekontai omos an prokeitai gia
unnumbered routing.
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