Quick lesson in subnetworking, because I think the problem isn't your IPtables-settings but your network layout.
192.168.0.x is a class C network address. 192.168.0 is the network address, and the last number is the host-portion of the address. If all PCs have an address beginning with 192.168.0 and a netmask of 255.255.255.0 they are on the same subnet, and don't need routing. If you need to separate your LAN into difefrent subnets, use 192.168.0.x and 192.168.1.x etc... Creating a subnet with mask 255.255.255.255 isn't possible, because that way you don't have any broadcast/network-addresses. If you think this goes into the right direction, please give more details about your LAN and ask for more information :-) regards, Steven (CCNA) On Sat, 2003-06-28 at 20:47, SainTiss wrote: > Well, what I *need* e.g. on the gateway is something like this: > > Kernel IP routing table > Destination Gateway Genmask Flags Metric Ref Use > Iface > 192.168.0.3 0.0.0.0 255.255.255.255 UH 0 0 0 > eth2 > 192.168.0.2 0.0.0.0 255.255.255.255 UH 0 0 0 > eth1 > 213.118.248.0 0.0.0.0 255.255.252.0 U 0 0 0 > eth0 > 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 > lo > 0.0.0.0 213.118.248.1 0.0.0.0 UG 0 0 0 > eth0 > > However, by default those upper 2 rules aren't there, and instead > there's a rule like this: > > 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 > 0 eth2 > > So in other words, by default ALL LAN traffic is routed through eth2, > while obviously traffic with 192.168.0.2 should be routed via eth1. > > Did that make it any clearer? > > Thanks, > > Hans > > On Sat, 2003-06-28 at 20:18, Bill Mullen wrote: > > On Sat, 28 Jun 2003, SainTiss wrote: > > > > > I just changed my network configs here, and it seems the routing table > > > got messed up... > > > > > > I know the solution (ie adding some rules and deleting some), but I was > > > wondering if there was some file or something where I could specify the > > > right rules, so that the table is setup correctly at boot? > > > > > > what's the default way to do this? I'm guessing some file which is then > > > processed by ifup or something, but I'm not sure... > > > > Depends on what's messed up. :) > > > > Most settings draw on the information in the "/etc/sysconfig" directory, > > specifically the "network" file and the various "ifcfg-<interface>" ones > > in the "network-scripts" subdirectory. For simpler setups, these are all > > you'll need to adjust, but we have no idea how complicated your normal > > routing table actually is ... care to offer a hint? ;)
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