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FreeBSD Security Archives: Re: How to prevent motd including os

Re: How to prevent motd including os info


Garrett Wollman (wollmankhavrinen.lcs.mit.edu)
Mon, 13 Sep 1999 15:12:58 -0400 (EDT)


[Cc's massively snipped.]

<<On Sun, 12 Sep 1999 19:22:28 -0700 (PDT), "Rodney W. Grimes" <freebsdgndrsh.dnsmgr.net> said:

> Okay, are SYN * ^URG * ^PSH * FIN packets, another words packets with
> just the SYN and FIN bits set, but not the others used anyplace other
> than in T/TCP aka rfc1644?

The finger client used to do this, before it was pointed out to me
that the finger specification does not allow it. fetch also tries to
do it (or at least tried; I haven't paid attention to the changes in
fetch recently).

I don't think the TCP in -current will generate such segments,
although it will process them correctly.

-GAWollman

--
Garrett A. Wollman   | O Siem / We are all family / O Siem / We're all the same
wollmanlcs.mit.edu  | O Siem / The fires of freedom 
Opinions not those of| Dance in the burning flame
MIT, LCS, CRS, or NSA|                     - Susan Aglukark and Chad Irschick

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This archive was generated by hypermail 2.0b3 on Mon Sep 13 1999 - 14:13:29 CDT