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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!nntp.coast.net!howland.reston.ans.net!swrinde!cs.utexas.edu!atlantis.utmb.edu!news From: bdodson@beowulf.utmb.edu (M. L. Dodson) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Some networking and Linux emulation questions Date: 11 Mar 1996 19:35:47 GMT Organization: The Sealy Center for Molecular Science Lines: 46 Distribution: world Message-ID: <4i1vak$dg7@atlantis.utmb.edu> Reply-To: bdodson@beowulf.utmb.edu NNTP-Posting-Host: beowulf.utmb.edu Hi, Some questions about IP networking (and, below, about Linux emulation): I picked up a surplus 386SX-16 a few days ago for $20. I have in mind to set it up as a router between a home network and an ISP over a 28.8 modem. My question is on feasibility of the following configuration: 1. A fast (16550A) serial port card to interface the modem, at, say, 38.8 kbps using ijppp. 2. I don't want to spend much on ethernet cards given what I paid for the box, so would a NE2000 clone be efficient enough not to load the machine down? (I've seen these for $20 each after mailin rebate.) 3. I understand that if I use proxy servers for the IP services the IP addresses on my local net would not be externally visible; everything would appear to come from the (dynamically assigned) IP address of the ppp connection on the router. Is this right? So I can hide a whole network behind the router? 4. Is the 386SX-16 fast enough to run the NE2000, the serial card, ijppp, and proxy servers for the IP services (particulary a httpd server) on 2.1R in 4 MB? I'll likely use it as a pop server for a Win95 box as well, but that shouldn't load it much as it is unlikely my family will be surfing the net and reading mail at the same time. 5. I understand that I will need 6 MB to install the system, but 4 MB will be enough to run 2.1R once installed. Is this correct? A question on Linux emulation: Is there much of a performance hit compared to the native system calls? Is it just the system calls that are slowed down, i.e., is the c library, etc. also slower on emulation? TIA, Bud Dodson -- M. L. Dodson bdodson@beowulf.utmb.edu 409-772-2178 FAX: 409-772-1790