Bugtraq mailing list archives
Re: Excellent host SYN-attack fix for BSD hosts
From: vern () ee lbl gov (Vern Paxson)
Date: Mon, 14 Oct 1996 10:18:23 PDT
I don't understand why window scaling would be a problem, since the window size isn't included in the MD5 ...
Because the window scaling option is not included in any packets other than the initial SYN. So if you don't remember it from when the SYN is first seen, you have no way to recover it. The goal is to not keep any state around, so the scale has to be buried in the munged sequence number. Vern
Current thread:
- Re: Excellent host SYN-attack fix for BSD hosts Scriptors of DOOM (Oct 11)
- <Possible follow-ups>
- Re: Excellent host SYN-attack fix for BSD hosts Mark Graff (Oct 11)
- Poorly setup news servers Alan Brown (Oct 12)
- HPUX PPP Bug - bugger.ppl Aleph One (Oct 12)
- Re: Poorly setup news servers Bryan Reece (Oct 12)
- Re: Excellent host SYN-attack fix for BSD hosts Avi Freedman (Oct 12)
- Poorly setup news servers Alan Brown (Oct 12)
- Re: Excellent host SYN-attack fix for BSD hosts Charles M. Hannum (Oct 13)
- Re: Excellent host SYN-attack fix for BSD hosts Casper Dik (Oct 14)
- Re: Excellent host SYN-attack fix for BSD hosts Granville Moore (Oct 14)
- Re: Excellent host SYN-attack fix for BSD hosts Vern Paxson (Oct 14)
- Re: Excellent host SYN-attack fix for BSD hosts Jeff Weisberg (Oct 14)
- Re: Excellent host SYN-attack fix for BSD hosts Alan Cox (Oct 15)
- Re: Excellent host SYN-attack fix for BSD hosts Darren Reed (Oct 15)
- ftpd bug? Was: bin/1805: Bug in ftpd James Poland 6-5251 (Oct 15)
- Re: Excellent host SYN-attack fix for BSD hosts Jeff Weisberg (Oct 14)
- Re: Excellent host SYN-attack fix for BSD hosts Steve Kann (Oct 15)
- Re: Excellent host SYN-attack fix for BSD hosts Jeff Weisberg (Oct 15)
- Re: Excellent host SYN-attack fix for BSD hosts D. J. Bernstein (Oct 15)
- Re: Excellent host SYN-attack fix for BSD hosts Vern Paxson (Oct 16)