nanog mailing list archives
RE: DDOS anecdotes
From: Tim Devries <Tim.Devries () Q9 com>
Date: Sat, 23 Jun 2001 16:24:45 -0400
-----Original Message----- From: Mikael Abrahamsson [mailto:swmike () swm pp se] Sent: Saturday, June 23, 2001 4:16 PM To: 'nanog () merit edu' Subject: RE: DDOS anecdotes On Sat, 23 Jun 2001, Tim Devries wrote:
FYI beware of service pack 2. It sets the DF bit so packets cannot fragment. Particularily offensive if your server is on the other side of
a
tunnel (due to the overhead). The solution is to reduce the MTU on the
box.
Or use a different OS :)
I thought this was standard behaviour of Microsoft OSes since at least Win95. I know NT does this as standard, so does Win95 and 98. Win2k does this standard out of the box (at least last time I checked).
I have tested it with sp1 and this behaviour does not occur. I have not tested it without any serverice packs so you may be correct in that regard. Tim Devries Technical Trainer Q9 Networks 100% Uptime
Current thread:
- Re: Few questions to the american ISPs [Re: DDOS anecdotes], (continued)
- Re: Few questions to the american ISPs [Re: DDOS anecdotes] E.B. Dreger (Jun 24)
- Re: Few questions to the american ISPs [Re: DDOS anecdotes] Mikael Abrahamsson (Jun 24)
- Re: Few questions to the american ISPs [Re: DDOS anecdotes] Steven J. Sobol (Jun 24)
- Re: Few questions to the american ISPs [Re: DDOS anecdotes] Alexei Roudnev (Jun 23)
- Re: more on IP source filtering... RJ Atkinson (Jun 23)
- Re: anti-spoofing filters RJ Atkinson (Jun 23)
- RE: DDOS anecdotes Vivien M. (Jun 23)
- RE: DDOS anecdotes Mikael Abrahamsson (Jun 23)
- Re: DDOS anecdotes Valdis . Kletnieks (Jun 24)