On Wed, 2005-08-03 at 23:37 +0200, Ryan Viljoen wrote:
> Joseph could you direct me toward a how to on how to set that up, please.

I use freesco firewall and they have small package (add-on) called
knock, you can install it on a floppy see my howto:
http://forums.freesco.org/support/index.php?showtopic=13731
but eventually I moved it to HD (as I had too much problems with 1.68Mb
floppies) 
My intension was to use this setup to print to a remote printer location
over SSH, and it works like a charm.

The knock demon runs on firewall (that is the best setup) and listen for
specific knock sequence.  You can open any port this way.  
If you have a Gentoo based firewall, knock in in portage but your
machine must more mussels to run Gentoo; and Freesco will run on any
"door-stopper" starting from 486. 

-- 
#Joseph

> Raphael have you gone through
> http://www.gentoo.org/doc/en/security/index.xml it has some good
> points and worth going through and ticking off each one.
> 
> Cheers
> Rav
> 
> On 8/3/05, Joseph <[EMAIL PROTECTED]> wrote:
> > On Tue, 2005-08-02 at 23:50 +0000, Raphael Melo de Oliveira Bastos Sales
> > wrote:
> > > Hi there,
> > >
> > >    I was wondering what tools should I use to detect security flaws to
> > > my server and a few tips on how to use them. What are the most common
> > > forms of attack and how do I avoid being attacked by one of them?
> > >
> > >    The services avaliable are only Apache - SSL and SSH. I've
> > > installed an firewall, iptables and firestarter to control it, and
> > > blocked all ports except 443 and 8080, where the SSH is listening.
> > > Apache has PHP installed as a module.
> > >
> > > Thanks for the attention,
> > >
> > > Raphael.
> > 
> > I have port knocking installed on firewall, to further protect any SSH
> > attacks.
> > So port 22 is closed (in stealth mode) and only opens if it received the
> > right knock sequence, moreover it is only opened to an IP address from
> > which received successful knock sequence; all others see this port as
> > closed (in stealth mode).
> > 
> > --
> > #Joseph

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