From owner-freebsd-questions@FreeBSD.ORG Mon Sep 27 19:07:49 2010 Return-Path: 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 CA477106566B for ; Mon, 27 Sep 2010 19:07:49 +0000 (UTC) (envelope-from jrisom@gmail.com) Received: from mail-yx0-f182.google.com (mail-yx0-f182.google.com [209.85.213.182]) by mx1.freebsd.org (Postfix) with ESMTP id 809258FC12 for ; Mon, 27 Sep 2010 19:07:49 +0000 (UTC) Received: by yxn35 with SMTP id 35so2020945yxn.13 for ; Mon, 27 Sep 2010 12:07:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from :user-agent:mime-version:to:subject:references:in-reply-to :content-type:content-transfer-encoding; bh=gfxq5qQDFPpdL+pdk3RW6cqhyPXik0orRdoBN2rlu2M=; b=wDWoc67cHgXZwczPatCa56Z3rR4398JwC8KqUf/7TOc+D9l4zUeGgbfS8aRJtvlwlW L0MWBCgEPdZwLihGR0s9FSa6D6xE8GLi8msiyZmud4GXDa2o6iQ7MkbftdVZYGTbxiKS HEZDgGFAvpAGTgtBn0lhAX6m69dto6lc6iZ5s= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; b=SLr82OAtXdDQYDWTkBk1PfHm2+daZkbPGUOYONMV5w/IWjEtEjcFMYrMwZmuK9HBZy +JL8jM+ZT+Bk5N1EyLEiSPX0sFaBWMSaML89oL3Y+O7csHid8oMEHEd7BDe13Gm+63f3 FF4g/+4MitCpMVIAZR2L8RpCmLQXfVoflT0Qg= Received: by 10.100.210.6 with SMTP id i6mr6306915ang.143.1285614468606; Mon, 27 Sep 2010 12:07:48 -0700 (PDT) Received: from [192.168.1.3] (c-24-14-170-47.hsd1.il.comcast.net [24.14.170.47]) by mx.google.com with ESMTPS id t24sm6758468ano.12.2010.09.27.12.07.47 (version=SSLv3 cipher=RC4-MD5); Mon, 27 Sep 2010 12:07:47 -0700 (PDT) Message-ID: <4CA0EB84.3040802@gmail.com> Date: Mon, 27 Sep 2010 14:07:48 -0500 From: Joshua Isom User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.9) Gecko/20100915 Thunderbird/3.1.4 MIME-Version: 1.0 To: freebsd-questions@freebsd.org References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: Prevent symbolic links in pure-ftp! X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 Sep 2010 19:07:49 -0000 On 9/27/2010 12:00 PM, Phan Quoc Hien wrote: > 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. > man 8 jail Jails limit file system access, device access, and kernel access.