Jednostavan router

Uputstva, saveti i trikovi

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Post Napisano: 15 Apr 2010, 20:46


Jednostavno rutiranje mreze

ADSL (router DHCP) laptop(eth0,eth1) pc(eth0)
  • eth0 (prikacen na ADSL router i dobija sva podesavanja preko DHCPa)
  • eth1 (drugi interface preko kog ce se prosledjivati saobracaj u lokalnu mrezu)
  • ppp0 (Postoji ukoliko se koristi pppoe konekcija)

Router masina
Aktiviranje eth1 interface-a

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$ ifconfig eth1 up 
Dodela IP adrese eth1 (interface na koji ce se "kaciti" masine iz lokalne mreze)

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$ ifconfig eth1 192.168.0.1

Omoguci TCP/IP prosledjivanje

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$ echo 1 >/proc/sys/net/ipv4/ip_forward

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$ iptables -P INPUT ACCEPT

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$ iptables -P FORWARD ACCEPT

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$ iptables -P OUTPUT ACCEPT


Omoguci pristup internetu preko eth0 (ako se koristi ppp0,  zameniti eth0 > ppp0)

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$ iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

Sledeci red je potreban ukoliko se koristi pppoe, omogucuje da se eth0 i eth1 mreze medjusobno vide

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$ iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE

Masina koja se "kaci" na router

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$ ifconfig eth0 up

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$ ifconfig eth0 192.168.0.2

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$ route add default gw 192.168.0.1 eth0
Dodati /etc/resolv.conf DNS servere (primer OpenDNS)

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nameserver 208.67.222.222
nameserver 208.67.220.220
Za izradu ovog uputstva koriscen je materijal sa LUGoNS stranica (IPTables za firewall, port forwarding i spajanje više mreža)
Last edited by branko on 15 Apr 2010, 20:48, edited 1 time in total.


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