From: Ruprecht Helms <rhelms@mymail.ch>
To: Elvir Kuric <omasnjak@yahoo.com>
Cc: netfilter@lists.netfilter.org
Subject: Re: Preventing port scanning using iptables ?
Date: Sat, 05 Aug 2006 09:14:52 +0200 [thread overview]
Message-ID: <44D4456C.5050203@mymail.ch> (raw)
In-Reply-To: <20060805062309.43523.qmail@web56213.mail.re3.yahoo.com>
Elvir Kuric schrieb:
> Hi all,
> I am trying to implement proper firewall to my
> network using iptables
> and I have to admit that I am amazing by amount of
> iptables features
> it offers.
> But I can not understand is there any way to prevent
> port scanning
> using iptables?
Yes by checking the tcp-flags. The connections are not established
because only the port is checked if it is reachabele.
Regards,
Ruprecht
-------------------------------------------------------------------
Ruprecht Helms IT-Service & Softwareentwicklung
let worktools be individual
Web: http://www.rheyn.de
next prev parent reply other threads:[~2006-08-05 7:14 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-05 6:23 Preventing port scanning using iptables ? Elvir Kuric
2006-08-05 7:14 ` Ruprecht Helms [this message]
2006-08-05 8:00 ` Elvir Kuric
2006-08-05 13:41 ` Sietse van Zanen
2006-08-06 9:26 ` former03 | Baltasar Cevc
2006-08-06 11:15 ` Pascal Hambourg
2006-08-09 2:29 ` Michael Rash
2006-08-09 8:47 ` Marc Haber
2006-08-10 1:28 ` R. DuFresne
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