From mboxrd@z Thu Jan 1 00:00:00 1970 From: carlopmart Subject: Recommended iptables setup for management servers Date: Mon, 30 Apr 2012 20:59:00 +0200 Message-ID: <4F9EE0F4.30302@gmail.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject :content-type:content-transfer-encoding; bh=HdeBZLCGdlDfBFpAHufpBnQ/PB47Rqs9bglhafOn7Fk=; b=wP7sZyFLUMxH9w/9lU5ZGokZHWQXS6+Wv3kVj1q9OIx6QLTXXxqJxyuDFHPuVXX/bl j+OQvOI04omFjd8dnliDQur6UrwR8QJKPtn6M+Wzvu51H1W3HJQIxDmR2/uSsa2oPNCR sD6SbvRbGdYOs3cq4p2qIU8diJ4iD4v9MiCZgNRH5U/9GmZA+6vj6gp2hgrlWTIgrZF3 X0OnuWqbXOEo198k6NXqk+q7QOwWJpLaeJecq4OB+askyHBfw2dq48NvY1F9Om5ZupT6 QYk/U1aOxU2ZE2in5NylcW1r49cap6CgfeY9A/4yv8EcRYkiFAupPHaDzld0/5T2tD95 4vTQ== Sender: netfilter-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: netfilter@vger.kernel.org Hi all, I am searching some tutorials about how to configure a robust/lockdown iptables rules to protect management servers (for example some NSM servers and firewall management servers). Yes, exists a lot of info in the web but nothing pretty much concise. I have used over several years BSD firewalls (pf) and this task is very simple ... but with iptables I am really lost ... The best tutorial that I have found is: http://www.remetter.de/os_linux_skript.php .. but it seems too old, or not? My linux servers are CentOS 6 ... My primary objective is to block malformed packets, scans, and control packets managed by mangle. Some of these servers have two interfaces and some services needs to be reached by this secondary interface. Any help? Thanks. -- CL Martinez carlopmart {at} gmail {d0t} com