Full Disclosure mailing list archives
Re: E-Mail viruses
From: "Incident List Account" <incidents () tooterfish com>
Date: Fri, 5 Mar 2004 13:12:37 -0800
Curt, be carefull not to strain your arm patting yourself on the back :) I actually really like your solution UNTIL the "completely eliminates the need for antivirus on the mail server" comment. If an outside party follows the procedure and remnames his file to file1.inc and sends it to your user, are you 100% confident in that outside party's attachement is not inadvetantly infected with a virus? I agree that only allowing a certain obscure extension through to your user eliminates the VAST majority of the problems. I would not however trust any file from a third party with out some sort of scan.
Methinks you misunderstand. Only the proprietary extension, i.e. .inc or .xyz or .whatever, would be allowed through, and since virus writers would never use this extension, it would eliminate ALL viruses at the gateway. The nice thing about this approach is that it completely eliminates the need for any anti-virus on the mail server since all virus attachments are automatically dropped without the need for scanning. Quite a simple, yet elegant solution, if I do say so myself. Curt Purdy CISSP, GSEC, MCSE+I, CNE, CCDA Information Security Engineer DP Solutions ---------------------------------------- If you spend more on coffee than on IT security, you will be hacked. What's more, you deserve to be hacked. -- White House cybersecurity adviser Richard Clarke _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
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Current thread:
- RE: [inbox] Re: Re: E-Mail viruses, (continued)
- RE: [inbox] Re: Re: E-Mail viruses Curt Purdy (Mar 09)
- Re: [inbox] Re: Re: E-Mail viruses gadgeteer (Mar 05)
- RE: [inbox] Re: Re: E-Mail viruses Patrick Nolan (Mar 05)
- Re: [inbox] Re: Re: E-Mail viruses Nick FitzGerald (Mar 05)
- RE: [inbox] Re: Re: E-Mail viruses Aditya, ALD [Aditya Lalit Deshmukh] (Mar 07)
- RE: [inbox] Re: Re: E-Mail viruses Nick FitzGerald (Mar 07)
- Re: [inbox] Re: Re: E-Mail viruses Jorge Daza (Mar 07)
- Re: [inbox] Re: Re: E-Mail viruses Nick FitzGerald (Mar 07)
- Re: [inbox] Re: Re: E-Mail viruses Sam Sharpe (Mar 08)
- RE: [inbox] Re: E-Mail viruses Curt Purdy (Mar 05)
- Re: Re: E-Mail viruses docco (Mar 06)
- Re: Re: E-Mail viruses Curt Purdy (Mar 06)
- Re: Re: E-Mail viruses Eddie (Mar 06)
- RE: Re: E-Mail viruses Aditya, ALD [Aditya Lalit Deshmukh] (Mar 08)
- Re: Re: E-Mail viruses docco (Mar 08)
- Re: Re: E-Mail viruses Bruno Wolff III (Mar 08)
- Re: Re: E-Mail viruses docco (Mar 06)