*BSD News Article 42175


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From: iialan@iifeak.swan.ac.uk (Alan Cox)
Subject: Re: SAMBA and NETWARE mounting
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References: <D2x440.1J1@pe1chl.ampr.org> <D2z554.K4F@park.uvsc.edu> <D351G6.2qo@pe1chl.ampr.org>
Date: Mon, 6 Feb 1995 11:45:05 GMT
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In article <D351G6.2qo@pe1chl.ampr.org> pe1chl@wab-tis.rabobank.nl writes:
>In <D2z554.K4F@park.uvsc.edu> Terry Lambert <terry@cs.weber.edu> writes:
>>OK, neutrally speaking, what would you point to as the main
>>advantage of IPX?
>As others have also written in the meantime: large addressing space,
>easy configuration, small size in memory.

A pure minimalistic IP/UDP implementation is a similar sort of size (and
similarly useful 8)). Large addressing space isn't so much the issue
as easily autoconfigured clients.

>>You want a technical attack on IPX?  OK, how about the lack of
>>packet checksums?  How about the misimplementation of the 802.3
>>protocol encapsulation header?
>Packet checksums are an option in IPX.
>You are not forced to use 802.3 (we use Ethernet-II here and it works fine)

IPX has some massive other problems. Packet signing for securit is a nice
idea. Pity they don't apply it to routing. Instant denial of service
attack. Still better than or equal to IP until IP-AH is done.

>PC implementations of NFS (or SMB for that matter) are not better
>than that.

NFS is not an especially good protocol. NQNFS is rather cleverer about
this. Amoeba bullet appears to be extremely clever about it. AFS seems
to have the design right pity about the freeness.

Even NFS however allows effective use of parallel requests unlike NCP
seems too (from trying to decipher the protocol). 

Alan

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