Routing and bandwidth problem

From: Rodolfo J. Paiz (rpaiz_at_simpaticus.com)
Date: 05/05/04

  • Next message: Tobias Speckbacher: "RE: Routing and bandwidth problem" 
    Date: Tue, 04 May 2004 20:36:04 -0600
To: fedora-list@redhat.com, redhat-list@redhat.com

    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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  • Next message: Tobias Speckbacher: "RE: Routing and bandwidth problem"

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