Re: [LARTC] bridge or vlan
On 10/22/07 15:50, Vaidas M wrote: Thanks for your answer, this would help. You are welcome. I think I know how to block arp: -p ARP -j DROP something like that, ant the broadcasts: --pkttype-type ... Be careful blocking all ARP / broadcasts. Remember that equipment will need to ARP to find the router, at least from the two LANs that are not common with the router. You will probably want to allow ARPs to the router's IP address (and any other common equipment) and block all others. Grant. . . . ___ LARTC mailing list LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
Re: [LARTC] bridge or vlan
On 10/20/07 06:23, Vaidas M wrote: Hello to everyone, Here is the situation: [LAN1]---[eth3]/--\ | LinuxBR |[eth2]---[LAN0]---[linuxGW]---[internet] [LAN2]---[eth4]\--/ Whole LAN is in subnet 10.0.0.0/24. So I need: LAN0, LAN1, LAN2 could not see each other. LAN0, LAN1, LAN2 is in same subnet (10.0.0.0/24). All LANs have to get only internet. How can I configure LinuxBR to do so? Do I have to do only bridge? Or only vlan? Or both? This is very simple to do. Bridge all your LANs together (what ever interface you choose to use, physical and / or VLAN) and use EBTables to block forwarding of any traffic that has a source and destination on your 10.0.0.0/24 network. This will allow traffic from the LAN to the world and from the world to the LAN to be bridged, but not allow LAN to LAN traffic to be bridged. ebtables -t filter -A FORWARD --ip-src 10/24 --ip-dst 10/24 -j DROP This will block all IP traffic. Broadcasts and ARPs will get through, but can be stopped if you do want. If you do want broadcasts and ARPs to be stopped let me know and I'll propose some follow up rules to add to the above to stop them. Grant. . . . ___ LARTC mailing list LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
Re: [LARTC] bridge or vlan
On Sat, 20 Oct 2007 14:23:12 +0300 "Vaidas M" <[EMAIL PROTECTED]> wrote: > Hello to everyone, > > > > Here is the situation: > > [LAN1]---[eth3]/--\ > >| LinuxBR |[eth2]---[LAN0]---[linuxGW]---[internet] > > [LAN2]---[eth4]\--/ > > Whole LAN is in subnet 10.0.0.0/24. > > > > So I need: > > LAN0, LAN1, LAN2 could not see each other. > > LAN0, LAN1, LAN2 is in same subnet (10.0.0.0/24). > > All LANs have to get only internet. > > > > How can I configure LinuxBR to do so? > > Do I have to do only bridge? Or only vlan? Or both? > On LinuxBR: iptables -A FORWARD -s 10.0.0.0/24 -d linuxGW_IP/32 -j ACCEPT iptables -A FORWARD -s 10.0.0.0/24 -d 10.0.0.0/24 -j DROP iptables -t nat -A POSTROUTING -s 10.0.0.0/24 -d linuxGW_IP/32 -j MASQUERADE On linuxGW: iptables -t nat -A POSTROUTING -s LinuxBR_IP/32 -j MASQUERADE -- With best regards, Pan'ko Alexander. ___ LARTC mailing list LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
[LARTC] bridge or vlan
Hello to everyone, Here is the situation: [LAN1]---[eth3]/--\ | LinuxBR |[eth2]---[LAN0]---[linuxGW]---[internet] [LAN2]---[eth4]\--/ Whole LAN is in subnet 10.0.0.0/24. So I need: LAN0, LAN1, LAN2 could not see each other. LAN0, LAN1, LAN2 is in same subnet (10.0.0.0/24). All LANs have to get only internet. How can I configure LinuxBR to do so? Do I have to do only bridge? Or only vlan? Or both? Thanks. _ _ __ _ _ _ __ ___ _ Vaidas M. [Noxius] ___ LARTC mailing list LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
