nanog mailing list archives
Re: Did Wanadoo, French ISP, block access to SCO?
From: "Rubens Kuhl Jr." <rubens () email com>
Date: Sun, 1 Feb 2004 21:24:07 -0200
Just drop the www.sco.com DNS record, as they did... this particular worm goes after the URL, not the IP it usually had.
nslookup www.sco.com
*** can't find www.sco.com: Non-existent domain
nslookup www.caldera.com
Non-authoritative answer: Name: www.caldera.com Address: 216.250.128.12 Rubens ----- Original Message ----- From: <Valdis.Kletnieks () vt edu> To: "Rubens Kuhl Jr." <rubens () email com> Cc: <hackerwacker () cybermesa com>; <nanog () merit edu> Sent: Sunday, February 01, 2004 9:09 PM Subject: Re: Did Wanadoo, French ISP, block access to SCO? On Sun, 01 Feb 2004 20:00:40 -0200, "Rubens Kuhl Jr." <rubens () email com> said:
And by blackholing that IP they've also blackholed www.caldera.com, which
is
currently not a DDoS target but is also not respondig to requests.
Umm,, I'll bite. If www.sco.com and www.caldera.com are on the same IP, how do you create a DDoS that wouldn't take out the Caldera site as well? A sheer-traffic DDoS will hurt both. A synflood will hurt both. The webserver that's listening on port 80 doesn't know which site is being connected to until it actually reads in the HTTP/1.1 headers and looks at the Host: tag - and if there's enough things arriving with 'Host: www.sco.com', it will require some *very* creative filtering/limiting to keep one website working while the other is down....
Current thread:
- Did Wanadoo, French ISP, block access to SCO? Sean Donelan (Feb 01)
- Re: Did Wanadoo, French ISP, block access to SCO? James Edwards (Feb 01)
- Re: Did Wanadoo, French ISP, block access to SCO? Thomas Seyrat (Feb 01)
- Re: Did Wanadoo, French ISP, block access to SCO? Rubens Kuhl Jr. (Feb 01)
- Re: Did Wanadoo, French ISP, block access to SCO? Valdis . Kletnieks (Feb 01)
- Re: Did Wanadoo, French ISP, block access to SCO? Rubens Kuhl Jr. (Feb 01)
- Re: Did Wanadoo, French ISP, block access to SCO? Stephen J. Wilcox (Feb 01)
- Re: Did Wanadoo, French ISP, block access to SCO? Jess Kitchen (Feb 01)
- Re: SCO Petri Helenius (Feb 01)
- Re: SCO Valdis . Kletnieks (Feb 01)
- Re: Did Wanadoo, French ISP, block access to SCO? James Edwards (Feb 01)
- Re: Did Wanadoo, French ISP, block access to SCO? Petri Helenius (Feb 01)
- Re: Did Wanadoo, French ISP, block access to SCO? Randy Bush (Feb 01)
- Re: Did Wanadoo, French ISP, block access to SCO? Petri Helenius (Feb 01)
- <Possible follow-ups>
- RE: Did Wanadoo, French ISP, block access to SCO? CHUNIKHIN Igor FTLD (Feb 01)