Full Disclosure mailing list archives

Re: (ICMP attacks against TCP) (was Re: HPSBUX01137 SSRT5954

From: Casper.Dik () Sun COM
Date: Thu, 21 Jul 2005 19:17:15 +0200

There are still some radio links with MTUs of 296 bytes.


Go search with google....people still actively use smaller MTUs.

What do you do?  Where do you draw the line in the sand?


Well, the minimum requirement for "you must be able to reassemble this"
is 576; so you use PMTU until you go as low as 576 at which point you
stop using the DF bit.

Casper
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Current thread:

(ICMP attacks against TCP) (was Re: HPSBUX01137 SSRT5954 rev.4 - HP-UX TCP/IP Remote Denial of Service (DoS)) Fernando Gont (Jul 19)
- Re: (ICMP attacks against TCP) (was Re: HPSBUX01137 SSRT5954 rev.4 Darren Reed (Jul 20)
  - Re: (ICMP attacks against TCP) (was Re: HPSBUX01137 SSRT5954 rev.4 Fernando Gont (Jul 20)
    - Re: (ICMP attacks against TCP) (was Re: HPSBUX01137 SSRT5954 Darren Reed (Jul 21)
    - Re: (ICMP attacks against TCP) (was Re: HPSBUX01137 SSRT5954 Casper . Dik (Jul 21)
    - Re: (ICMP attacks against TCP) (was Re: HPSBUX01137 SSRT5954 Fernando Gont (Jul 21)
    - Re: (ICMP attacks against TCP) (was Re: HPSBUX01137 SSRT5954 Fernando Gont (Jul 21)
    - Re: (ICMP attacks against TCP) (was Re: HPSBUX01137 SSRT5954 Dana Hudes (Jul 22)
    - Re: (ICMP attacks against TCP) (was Re: HPSBUX01137 SSRT5954 Darren Reed (Jul 22)