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Masquearde and size of PC needed to run it

Posted on 1997-07-16
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I have set up a linux box only to perform ip masquerading for our private network to the internet.  The machine I have in place is doing a perfect job.  It is a pentium 166, 64 MB RAM, and has a 1.2 GB hard drive.  I need that horsepower somewhere else.  My question is what size of machine would be adequate enough to perform masquerading for 60 workstations?
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Question by:scrutchfield
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by:scrutchfield
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mgrcnk earned 20 total points
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I don't think that machine size will affect anything.  You will however have to worry about bandwidth.  We have a Sparc 1 doing firewall service for our university and it runs fine.  True, you will be transforming IP addresses, but it doesn't take much horsepower to do that.  Instead, look at what ethernet card you have.  60 machines all trying to use a single 10BaseT card would bottleneck rather quickly.  A 100BaseT or even FibreChannel network adaptor would work much better (depending on how much bandwidth you need and have past that machine).

In any case, processor speed won't make much of a difference (unless you're talking about a 10 MHz processor or something else ridiculously slow).

chris
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by:scrutchfield
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So then would something like a 486 DX2 66 with 16 MB RAM be sufficient?
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by:mgrcnk
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Definitely.  A Sparc 1 (our firewall) can handle a class B network (we have thousands of computers).  Granted, it only logs packets and forwards them on, but masquerading doesn't do much more than that.  It just translates addresses.

If would only start getting shakey if you were using a 386, 4 MB RAM, and running X.

For dedicated processes like that (we have DHCP boosters here), we use 486/50's I believe.  All they do is take a DHCP request from a remote network and tunnel it through a cable modem.  Never had a problem with that, so I doubt you will either.

chris
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