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Date:      Sat, 19 Jan 2002 17:32:05 +0100
From:      Alfatrion <alfatrion@cybertron.tmfweb.nl>
To:        "Joe & Fhe Barbish" <barbish@a1poweruser.com>
Cc:        "FBSD Questions" <questions@FreeBSD.ORG>
Subject:   Re: telnet/ftp security
Message-ID:  <14920284908.20020119173205@cybertron.tmfweb.nl>
In-Reply-To: <LPBBIGIAAKKEOEJOLEGOIEBFCNAA.barbish@a1poweruser.com>
References:  <LPBBIGIAAKKEOEJOLEGOIEBFCNAA.barbish@a1poweruser.com>

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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


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