From owner-freebsd-questions@FreeBSD.ORG  Mon Sep 27 17:00:13 2010
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id F12011065672
	for <freebsd-questions@freebsd.org>;
	Mon, 27 Sep 2010 17:00:12 +0000 (UTC)
	(envelope-from phanquochien@gmail.com)
Received: from mail-wy0-f182.google.com (mail-wy0-f182.google.com
	[74.125.82.182])
	by mx1.freebsd.org (Postfix) with ESMTP id 7F2E88FC1E
	for <freebsd-questions@freebsd.org>;
	Mon, 27 Sep 2010 17:00:12 +0000 (UTC)
Received: by wyb33 with SMTP id 33so6541031wyb.13
	for <freebsd-questions@freebsd.org>;
	Mon, 27 Sep 2010 10:00:11 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma;
	h=domainkey-signature:mime-version:received:received:date:message-id
	:subject:from:to:content-type;
	bh=e3GzeVUb1j/1NDhOjmxMyxdSiWDwliMAQTCr/O72UrA=;
	b=AjdHebnSfIxF59eYehEVQe/KIsiHgI9QsPSFamf1LsQ03BzviWaccZkHODwq0V2Vwj
	fomz4A2mYRPd7/LFKylMWHTcFW3+cvu3v/u2ZjZUsZERX9B9dLyfc6b9UCNE2CL0YPc5
	GCTwMyZYTHZEKqof2VTCS4bNM1tOO6YAZlcSc=
DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma;
	h=mime-version:date:message-id:subject:from:to:content-type;
	b=s1iRScokfm948d6mlGrmVhwddeiB2z13vdKvd9VGF/xF8LgY5TpU0sivIaIXVChhv8
	G2EasinfTC3gPzouUgzwZPQdsgiaUMC9l6qPbRPP/fvQTIidQkmHQcupDC+sDdbndzN4
	2j1yme0msnENEpytjhZNofkJ31pdNcsC3YEaU=
MIME-Version: 1.0
Received: by 10.227.128.18 with SMTP id i18mr6580598wbs.135.1285606811326;
	Mon, 27 Sep 2010 10:00:11 -0700 (PDT)
Received: by 10.227.142.194 with HTTP; Mon, 27 Sep 2010 10:00:11 -0700 (PDT)
Date: Tue, 28 Sep 2010 00:00:11 +0700
Message-ID: <AANLkTimctuy2WBzKiAO8tYEfRJW_J9N4Ejjdxc+csHKC@mail.gmail.com>
From: Phan Quoc Hien <phanquochien@gmail.com>
To: freebsd-questions@freebsd.org
Content-Type: text/plain; charset=ISO-8859-1
X-Content-Filtered-By: Mailman/MimeDel 2.1.5
Subject: Prevent symbolic links in pure-ftp!
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 27 Sep 2010 17:00:13 -0000

hi!

How to prevent symbolic links in pure-ftp for security issuse?

User can access outsite chroot by create symlink: ln -s / abc => and user
> can change dir to /
>

Anyone can solve this problem?
Thanks.

-- 
Mr.Hien
E-mail: phanquochien@gmail.com
Website: www.mrhien.info