Re: Routing and bandwidth problem

From: Crucificator (crucificator_at_xnet.ro)
Date: 05/05/04

  • Next message: Ed Wilts: "Re: question about RHEL-ES ISO's" 
    To: "General Red Hat Linux discussion list" <redhat-list@redhat.com>
Date: Wed, 5 May 2004 14:46:46 +0300

    why not use virtual adapters with ip's from different networks and use only
    one card?

    ----- Original Message -----
    From: "Rodolfo J. Paiz" <rpaiz@simpaticus.com>
    To: <fedora-list@redhat.com>; <redhat-list@redhat.com>
    Sent: Wednesday, May 05, 2004 5:36 AM
    Subject: Routing and bandwidth problem

    > Hey...
    >
    > I have no idea of which FM to R here, so I will happily accept pointers to
    > good documentation and HOWTO documents. Any other help is also welcome, as
    > I will need to solve this problem very soon. The problem is this:
    >
    > My small business is one of four tenants in a small building. The other
    > three have agreed to allow me to buy one big connection and then resell
    > service to them, such that they get a better price and I get to subsidize
    > my own Internet service. However, while I *could* set this up quickly
    > without any controls, they each want different service levels and amounts
    > of bandwidth and will be paying different prices, so I want to do this
    > properly.
    >
    > The firewall/gateway will run Fedora Core 1. I think I need *five*
    Ethernet
    > adapters in the server (eth0 to the ISP, and eth1-eth4 to the four
    tenants)
    > so that each client is properly isolated into their own network and cannot
    > access the other clients' computers. If there is a way to do this securely
    > and safely without a gaggle of Ethernet cards, please do tell! I can think
    > of doing this with 801.2q VLAN tagging, but that requires a managed switch
    > which is far more expensive. It seems to me that multiple Ethernet cards
    > are the simplest *and* cheapest way to do it.
    >
    > I know how to provide masquerading, firewall, gateway, DNS, DHCP, NTP, and
    > other services. What I don't know how to do is the following:
    >
    > 1. Required: Limit the total bandwidth a client can use to either
    > 128 Kbps or 256 Kbps.
    >
    > 2. Optional: Allow each client to exceed their limit if no one
    > else is using the space. That is, a customer who stays late when all other
    > offices are gone for the night, or someone who gets lucky that no one else
    > is using the Net at that particular moment, could get access to the entire
    > Internet connection (say, 512 Kbps). But if everyone is using the
    bandwidth
    > simultaneously, then each would get their fair share (what they paid for
    > and I provide, proportionately).
    >
    > 3. Optional: Even though traffic *through* the server (client
    > connecting to Internet) should be throttled and limited, it would be ideal
    > for traffic *to* the server (client connecting to the firewall) to have
    > full 100 Mbps link speed. This would allow me to download the FC2 ISO
    > images to the server at night, for example, and then let clients grab them
    > at 100 Mbps over the internal network instead of having that internal
    > download also throttled to 256 Kbps.
    >
    > 4. Optional: Provide each tenant with an FTP-served directory on
    > the server which can *only* be accessed from their network. So if they
    pull
    > down the confidential something or their wife's nude pictures, other
    > tenants cannot get at that information.
    >
    > Can someone offer some hints, pointers, suggestions, or magic beans?
    >
    > Thanks in advance!
    >
    >
    > --
    > Rodolfo J. Paiz
    > rpaiz@simpaticus.com
    > http://www.simpaticus.com
    >
    >
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