Date: Thu, 11 Oct 2001 09:46:21 -0400 From: Allen Landsidel <all@biosys.net> To: freebsd-security@FreeBSD.ORG, "Brock Kreiser" <root63@earthlink.net> Subject: Re: firewall Message-ID: <5.1.0.14.0.20011011094352.00b022e8@rfnj.org> In-Reply-To: <200110111324.f9BDOvl06544@cwsys.cwsent.com> References: <Your message of "Thu, 11 Oct 2001 00:56:02 EDT." <001101c15211$09dc51c0$0500a8c0@brockspc>
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At 06:24 AM 10/11/2001 -0700, Cy Schubert - ITSD Open Systems Group wrote: >Having said all that, you will have to seriously open your firewall in >order to make FTP work properly through your firewall. Even if you >restrict your FTP clients to using PORT (active) FTP, people can still >use an FTP bounce to map or even gain access to other hosts and ports >behind the firewall through your FTP server. These are two of the Can I get something clarified here? Judging by the tone of that statement, do you advocate using PORT over PASV? I agree standalone FTP has some pretty bad security implications, including hijacked sessions and password sniffing.. but that's what we have ftp-only users for. Passive mode I think is a far safer alternative than active also, as far as blowing holes in your firewall goes. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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