Re: Nmap issues...? or router?
From: Alex Butcher (alex@s3.integralis.co.uk)Date: 10/08/01
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Message-ID: <3BC19E95.7050600@s3.integralis.co.uk> Date: Mon, 08 Oct 2001 13:39:49 +0100 From: Alex Butcher <alex@s3.integralis.co.uk> To: bluefur0r bluefur0r <bluefur0r@drea.ms> Subject: Re: Nmap issues...? or router?
bluefur0r bluefur0r wrote:
> After just completeing an audit for a company that has a DS-3 connection (shared) and a cisco router (2015), One of the first issues that was found was this: When nmaping using -sS and all ports, 1 nmap scan nmaping 1 host at a time appeared to completely destroy their bandwidth... Has anyone heard of this? Could this be a Router or ISP problem??? It took very long to complete because i needed to use the -T Polite option. I'm just curious if anyone else has ever encountered nmap using up all network resources for such a high volume connection. Any help would be appreciated so this never happens again. *Luckily I started after hours*
> blue
I've seen similar; some firewalls (e.g. WatchGuard) start blocking
connections from hosts that generate 'x' policy violations in a
given time.
Bleh.
Best Regards,
Alex.
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