From owner-freebsd-questions Sat Jan 19 8:32:16 2002 Delivered-To: freebsd-questions@freebsd.org Received: from smtp06.wxs.nl (smtp06.wxs.nl [195.121.6.58]) by hub.freebsd.org (Postfix) with ESMTP id EB17B37B402 for ; Sat, 19 Jan 2002 08:32:07 -0800 (PST) Received: from cybertron.kruijff ([213.10.151.186]) by smtp06.wxs.nl (Netscape Messaging Server 4.15) with ESMTP id GQ71XH00.7CP; Sat, 19 Jan 2002 17:32:05 +0100 Date: Sat, 19 Jan 2002 17:32:05 +0100 From: Alfatrion X-Mailer: The Bat! (v1.53d) UNREG / CD5BF9353B3B7091 Reply-To: Alfatrion X-Priority: 3 (Normal) Message-ID: <14920284908.20020119173205@cybertron.tmfweb.nl> To: "Joe & Fhe Barbish" Cc: "FBSD Questions" Subject: Re: telnet/ftp security In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Hello Joe, Saturday, January 19, 2002, 5:08:57 PM, you wrote: JFB> I have telnet & FTP ID/PW access to my FBSD gateway/ipfw JFB> box from the internet. Are there any security holes in JFB> these two applications that would allow breaking into my system? The biggest security holes in those application is the lack of security. Both application send the usernames, passwords and the data unencrypted. All one has to do is sniff the username and passwords to gain access to the system. SSH(v2) and sftp are the equivalent encrypted versions. (a lot of other procolls are unsave to, like pop3, smtp, ect.) I have my machine set up so that it can not be reached from the internet with telnet, but did leave other procols untouched. To compromis for this i installed the use of one-time-use password, for certain users. You can check 'man skey' for this. -- Best regards, Alfatrion mailto:alfatrion@cybertron.tmfweb.nl To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message