Thread View: comp.security.misc
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7 total messages
Started by H. Sumargo
Sat, 15 Aug 1992 19:20
Wanted: How to setup a unix workstation for a maximum security
Author: H. Sumargo
Date: Sat, 15 Aug 1992 19:20
Date: Sat, 15 Aug 1992 19:20
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The subject said it all. I believe that there is some publish guide line that I can
download from some ftp sites. Could someone give the pointer and send to
sumargoh@serss0.fiu.edu
Thanks a lot for the response.
Re: Wanted: How to setup a unix workstation for a maximum security
Author: Mr. Heiji Horde
Date: Sun, 16 Aug 1992 16:42
Date: Sun, 16 Aug 1992 16:42
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Maximum security? That's easy. Don't take it out of the box. :) :) :)
For something slightly less secure, take it out of the box, set it up,
but don't plug it into the network. :) :) :)
-Heiji
"I've been hacking all night, my brain is toast."
--
===========================================================================
Mr. Heiji Horde (Non NeXT mail only please) e-mail: horde@reed.edu
All insane acts are done in affiliation with Madd Hacker Enterprises
"Don't explode in front of my parents, it wouldn't look good." - M.H.
Re: Wanted: How to setup a unix workstation for a maximum security
Author: Henk Smit
Date: Sun, 16 Aug 1992 20:19
Date: Sun, 16 Aug 1992 20:19
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horde@reed.edu (Mr. Heiji Horde) writes:
>Maximum security? That's easy. Don't take it out of the box. :) :) :)
>For something slightly less secure, take it out of the box, set it up,
> but don't plug it into the network. :) :) :)
It's very easy to ridicule somebody who wants to learn something. I
think its better (and maybe more difficult) to give useful information
than post some cliche....
There are lots of places where you can find information about security.
-- See Alex's monthly FAQ posting in this newsgroup.
-- Another good place to look is cert.org. There are lots of interesting
things you can ftp from there, e.g. old CERT advisories.
-- There are some PD papers about security eg. the excellent security-doc
by David Curry. Available from ftp.uu.net in the /doc/security directory.
You can find more interesting things there.
-- Books. See the FAQ. A good one is "Practical Unix Security" by Garfinkel
andd Spafford.
-- Contact your vendor for bugfixes. Some vendors make them available
through anonymous ftp. If you have Suns, look at ftp.uu.net in the
sun-fixes or sun-dist directory (/vendor/sun/...).
Another tip I can give you is ...., read the (friendly) manual pages :-)
Look what deamons are running on your system (using ps(1)). Also look at
the ones that are started by inetd. Take a day to just read the manual
pages that describe these daemons. Also read the ones in the SEE ALSO
section. Now you should know all configuration files associated with
these daemons. Check them all. There are lots of them, and they are all
important :-) /etc/exports, /var/yp/securenets, /etc/shells, /etc/ftpusers
/etc/netgroup, /etc/hosts.equiv to just name a few. Also look at all the
possible flags of those daemons. Lots of them are important. -s flag of
in.tftpd, -s flag of ypbind, the -n flag of rpc.mountd (do not use it !),
etc.
Reading all those manual pages may take some time, but it will pay off.
If you have Sun's, this might be another tip. Look at /etc/rc.local.
A couple of times there are choices in starting up daemons (rpc.mountd,
nfsd, etc..), depending on the existence of /etc/security. If you don't
have the C2 security package installed, this directory does not exist.
In this case those daemons are started up in a less secure mode.
Change the checks in /etc/rc.local so the more secure mode is chosen.
Hope this helps,
Henk.
--
Henk Smit Vrije Universiteit Amsterdam
Internet: henk@cs.vu.nl Phone: +31 20 548 6218
Re: Wanted: How to setup a unix workstation for a maximum security
Author: Rob J. Nauta
Date: Mon, 17 Aug 1992 10:50
Date: Mon, 17 Aug 1992 10:50
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In article <1939@kluge.fiu.edu> sumargoh@fiu.edu writes: > >The subject said it all. I believe that there is some publish guide line that I can >download from some ftp sites. Could someone give the pointer and send to > sumargoh@serss0.fiu.edu > >Thanks a lot for the response. I can give you some hints myself: - Don't connect it to a network, don't connect modems or Ethernet - Don't let anyone use it. If this is not desirable, let only those people use it who need to use it. Also enforce a policy for physical access control. - Have a good passwd policy, force users to choose good passwords. - Install all patches available, be sure you know what is fixed and what is unfixable. - Put a good sysadmin in charge, not some tape-changing drone, but an interested hacker-like programmer-type user. Rob -- /-----------------------------------------------\ ,==. | Rob J. Nauta, UNIX computer security expert. | /@ | | rob@wzv.win.tue.nl, Phone: +31-40-837549 | /_ < | Feel free to email me for free advice | =" `g'
Re: Wanted: How to setup a unix workstation for a maximum security
Author: Timothy Newsham
Date: Tue, 18 Aug 1992 06:51
Date: Tue, 18 Aug 1992 06:51
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In article <3731@wzv.win.tue.nl> rob@wzv.win.tue.nl (Rob J. Nauta) writes: >In article <1939@kluge.fiu.edu> sumargoh@fiu.edu writes: >> >>The subject said it all. I believe that there is some publish guide line that I can >>download from some ftp sites. Could someone give the pointer and send to >> sumargoh@serss0.fiu.edu >> >>Thanks a lot for the response. > >I can give you some hints myself: [...] >- Put a good sysadmin in charge, not some tape-changing drone, but an > interested hacker-like programmer-type user. > >Rob >-- someone like..... ROB? ;) (quick someone get this man off the street)
Re: Wanted: How to setup a unix workstation for a maximum security
Author: Damon
Date: Tue, 18 Aug 1992 22:22
Date: Tue, 18 Aug 1992 22:22
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In article <3731@wzv.win.tue.nl> rob@wzv.win.tue.nl (Rob J. Nauta) writes: >In article <1939@kluge.fiu.edu> sumargoh@fiu.edu writes: >> >>The subject said it all. I believe that there is some publish guide line that I can >>download from some ftp sites. Could someone give the pointer and send to >> sumargoh@serss0.fiu.edu >> >>Thanks a lot for the response. > >I can give you some hints myself: >- Don't connect it to a network, don't connect modems or Ethernet Or at least use dial-out only connections with uucp (and pos cu) only, and only allow a very limited range of commands (rmail and rnews making sure you have set news and mail up well) on the uucp link. >- Don't let anyone use it. If this is not desirable, let only those > people use it who need to use it. Also enforce a policy for physical > access control. >- Have a good passwd policy, force users to choose good passwords. >- Install all patches available, be sure you know what is fixed and > what is unfixable. >- Put a good sysadmin in charge, not some tape-changing drone, but an > interested hacker-like programmer-type user. All the rest is spot on. Damon -- Damon Hart-Davis | Tel/Fax: +44 81 755 0077 |1.22|| ALL MAIL FREE. Internet: dhd@exnet.co.uk | Also: Damon@ed.ac.uk || US hotrod motor groups. --------------------------+----------------------++ >12 mail&news polls / day. Public access UNIX (Suns), news and mail for #5 per month. FIRST MONTH FREE.
Re: Wanted: How to setup a unix workstation for a maximum security
Author: Paul M. Mickel
Date: Thu, 20 Aug 1992 21:23
Date: Thu, 20 Aug 1992 21:23
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In article <1992Aug16.164237.25937@reed.edu> horde@reed.edu (Mr. Heiji Horde) writes: >Maximum security? That's easy. Don't take it out of the box. :) :) :) > >For something slightly less secure, take it out of the box, set it up, > but don't plug it into the network. :) :) :) > > -Heiji > "I've been hacking all night, my brain is toast." This is especially bad at 3am, when you accidently shove a job into the back- ground, try to kill it, and kill init instead :) :) Seriously, I have book by the O' Reily people called "Practical Unix Security" that is an excellent book for setting up a machine that is reasonably secure. -pmm -- Paul M. Mickel Internet:mickel@oes.orst.edu Oregon State University UUCP: ...hplabs!orstext!mickel Corvallis, OR 97331 USA #include <stddisclaimer.h>
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