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Re: hacked, then intrusion detection system

On Sat, Feb 03, 2001 at 07:02:08PM -0300, mgriffa@fibertel.com.ar wrote:
> Hi.
> 	I just realized that someone entered my debian box with
> cablemodem. I couldn't find anything in the logs, but the pump package was
> deleted.
> 	I replaced inetd for xinetd. took off services I didnt't use (It
> was left all default, as I installed in a rush), and now I'd like a good
> intrusion detection system.
> 	I'd like to hear about any advices about not security (too wide)
> but tools to run in cron and which may be usefull for this kind of
> situations.

Most of what I  have read recommends a compete reinstall on a system that has
been breached.  There may be back-doors you don't find.  Take a look at -

Also set up a firewall to help prevent this in the future.  There is a
book at -
that might be helpful to you.  It is redhat based but many good tips.
You might want to start with the Security-HOWTO at -

There are many programs like "tripwire", "snort" "portsentry" you might
want to take a look at.  

You might want to think about getting an older box, 486, P100, along
those lines and set up a dedicated firewall for your other box(s).

I'd really love ta wana help ya Flanders but... Homer Simpson

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