Multiple LANs - One Internet Connection

Copy and paste into notepad.

--------- | Cable | | Modem | --------- | | | | | 192.168.100.0 /24 __________| |______ |__________________ | | | | | | |

There are two 192.168.100/24 nets, which is probably not a good idea.

Best is to randomly assign the third octet of a 192.168 address, or the second and third of a 10.x.y/24 address. If you join a VPN it reduces the change of having to change all the addresses.

Otherwise, yes, this is probably the best, and with routers down to $10, a very affordable solution.

-- glen

-- glen

Actually yeah, that's not a good idea. Typo on my part!

Yeah, we could get into something like a PIX 515 with a VLAN-capable switch, but that would be expensive and unnecessary.

You could roll your own with a spare PC and a few NIC cards, using freebsd or linux.. any old pentium box would work, or you could use one of the soekris boards..

I have a setup similar to this, with 3 lans, and a dsl line.. mapping to

gregorre8 wrote in part:

You've received good replies about hierarchy. I'd be more worried about performance. One person with a virus, p2p or sending large emails can use all the upstream bandwidth, making the large downstream unusable. A more intelligent [Linux] router can reduce this effect by QoS and throttling.

-- Robert

For the LAN routers, I planned on using DHCP but turn off NAT. For the LAN router, just the opposite. Good idea?

I have heard there is a version of linux to run on the WRT54G if you don't like the system that it comes with.

-- glen

You heard correctly. Sort of. Apparently you can hack it up through v4. V5 you can't. But what they did was come up with a special version (suffix L?) which can be hacked.

Google WRT54G hack and you'll get lots of links.