per-process routing

Polychronis Ypodimatopoulos pol at entelia.gr
Tue Aug 30 01:37:56 EEST 2005


Esto server me duo interfaces (px .1.1/24 kai .2.1/24) kai workstation me 
episeis duo interfaces (kai pali .1.2/24 kai .2.2/24).

Oneireuomai ena kosmo ston opoio kathomai sto workstation kai anoigo duo 
konsoles. Grafo sto proto ifconfig kai mou vgazei ip: 10.0.1.2 sto eth0. 
Tipota allo! Oute kan to deutero interface. Route default via 10.0.1.1
Sto idio oneiro sunexizontas, grafo ifconfig sto deutero konsole kai (opos 
mallon tha mantepses) mou vgazei ip: 10.0.2.2 sto eth1. Tipota allo! Oute kan 
to proto interface. Route default via 10.0.2.1

Os apotelesma kathe process pou ekteleitai apo kei kai pera sto proto konsole 
blepei mono to eth0 eno kathe process pou ekteleitai sto deutero konsole 
blepei mono to eth1.

Ksero oti tha mporousa na vazo ta katallila switches se kathe efarmogi (px -i 
sto ping, -b sto ssh k.o.k, alla (1) den exoun oles oi efarmoges (blepe 
firefox!) tetoia switches (2) san gnisios programmer variemai polu na grafo 
ta idia switches kathe toso.
O firefox einai polu simantiko na mporo episeis na elegxo apo poio interface 
tha kanei ta tcp connections tou. Px na mporo na dokimazo ena web server pou 
trexei apo ti mia pleura tou server (local lan without internet access), alla 
na mporo na exo prosbasi kai sto internet gia to aparaitito googling.

To "keep dreaming" den einai apodekti apantisi. Eixa tin entuposi oti to 
freeBSD kanei kati tetoia kolpa, alitheuei? 
Me virtual machines/servers exei paiksei kaneis? 




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