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Re: [Full-disclosure] SYN ACK scans to random ports
- To: "Crist Clark" <cjclark@xxxxxxxxxxxx>
- Subject: Re: [Full-disclosure] SYN ACK scans to random ports
- From: silence_is_best@xxxxxxxxxxxx
- Date: Wed, 25 Sep 2013 04:53:06 -0600
On 09/24/2013 at 10:29 PM, "Crist Clark" wrote:
Backscatter. Someone may be sending out spoofed SYNs. The target
sends SYN-ACKs to the spoofed source, you. What's the source port? A
well known service? Do the source addresses really have reachable
services on those ports?
On Sep 24, 2013 7:25 AM, wrote:
Can someone explain the point of a SYN ACK scan to random high ports?
I usually see a fair amount of these...at first I thought it was
maybe a block to an initiating SYN packet, but I don't see any
evidence that the SYN ACK isn't the first packet seen. Danke.
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That's a great point Crist I had not thought about that...thanks for
the insight.
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/