RE: [fw-wiz] RE: Help w/ Port 137 Traffic

From: Stefan Norberg (stefanat_private)
Date: Mon Oct 14 2002 - 00:16:55 PDT

  • Next message: Philip J. Koenig: "Re: [fw-wiz] Variations of firewall ruleset bypass via FTP"

    > I build mine very similar to you, with one exception. Any 
    > traffic from the inside net that the firewall is supposed to 
    > block, I'm REJECTing. That way internal devices don't 'hang' 
    > waiting for a timeout. Everything coming in from the outside 
    > still gets DROPPED though. But I do prefer to send a RST to 
    > hosts on the inside.
    
    I guess the trade-off here is ease-of-use (faster timeouts) vs
    higher security. It would be a lot easier for an internal attacker
    to port-scan the DMZ network space to figure out the firewall rules
    with your suggestion.
    
    Stefan
    
    
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