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Re: [LUG] some questions




On Sat, 21 Apr 2001, raven wrote:

> I've seen claims that linux is safe from viruses and also warnings
> about a worm doing the rounds, what is the situation on this, just how
> secure is linux?

Security on many systems is what you make of it.  For example, the Ramen
Worm (which attacks Red Hat Linux systems) uses old well known
exploits.  Any person who keeps a well patched system should never have
had an issue with this.

In contrast, Microsoft systems do not have the patches availabe in such
good time to prevent such being a problem.  

There are very few linux virii, and general awareness can thwart them
(don't surf the net as root etc).

> Is it safe, or safer, from hacking or other attacks?

Safer.  Just remember to keep up with the patches! (this applies to any OS
though).

> I saw a reference somewhere, (sorry, don't remember where), about a
> completeley encrypted file system, giving security even if physical
> access to the computer is gained. Is this possible with linux?

Not sure.  Personally if you're that paranoid, don't connect to the
internet.  And an encrypted filesystem is going to really stuff your
system performance in a major way.

> What are the options for secure email, (or browsing, IRC or other net
> activities come to that)?

Browsing:  None really.  All sites are not https.  you can turn off
cookies and javascript etc in your browser to increase security a bit.

Email:  pgp (or gpg) encrypt your mail.  Only worth doing if you have
someting worth encryping like passwords/bank details.

IRC: I'm not aware of any SSL type secure addons to IRC.

BTW, if you're even marginally paranoid, use ssh/scp in preference to
telnet/ftp.  Telnet and ftp both send plaintext passwords.

> One last question, will it be possible to see a linux machine in
> operation at the linux day event at Exeter uni?
> I'll try to attend to find out more.

Yes indeed it will.

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Learn about linux / 29th of April 2001
At Exeter University - www.linuxday.org.uk
Devon & Cornwall LUG - lug.termisoc.org

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