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How can I protect my sensitive information?
SUMMARY
Change the permissions or encrypt the file.
DETAILED SOLUTION
You need to make the file unreadable by other users on the system.
The simplest way to accomplish this is to do a
chmod g-r,o-r file
where file is the name of the file or directory. This will remove
the read permissions from the group and others. (Note that if you
do this to a file, you will not be able to see read it from the web
either.)
If you need something more secure, you can encrypt the file. In
telnet, you could do something like this:
cat origfile |crypt >newfile
This will encrypt the file with a simple encryption using a password
that you have entered and makes it impossible for the file to be read
by a human. To unencrypt the file, do much the opposite:
cat newfile |crypt >origfile.new
(Note that this encryption is very simple and should be used only on
information that one does not want the normal onlooker to see).
If you still need something even more secure, you can use PGP. It is
an encryption method that to date has not been broken. It is much
more complicated to use than either of the two above methods, so its
explaination will be left out of this simple FAQ.
LINKS TO OTHER RESOURCES
In telnet, do a
man command
where 'command' is 'chmod','crypt', or 'pgp'.
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©1997 Animus Communications
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