Penetration Testing mailing list archives
Re: All tcp ports open?
From: "sol seclists" <ramatkal () hotmail com>
Date: Mon, 30 Aug 2004 23:00:47 +0200
A script which does exactly what you desrcibe is mentioned in the book "hacking: the art of exploitation" by jon erickson only on a linux machine. the basic idea is something like: use tcpdump to monitor all incoming SYN packets not destined for any listening service and then use a packet generation tool (such as nemsis) to generate a packet with a seq#+1 and the SYN and ACK flags set. ----- Original Message ----- From: "Ben Timby" <asp () webexc com> To: <pen-test () securityfocus com> Sent: Sunday, August 29, 2004 9:04 AM Subject: All tcp ports open?
I am not sure what is doing this, but I assume it is a software (or some kind of) firewall/hids, can anybody point me in the right direction? I am pen-testing a Windows webserver, and a port scan reveals ALL tcp ports open. hping also confirms that a SA is returned for any S packets sent to any port I try. I can connect via netcat any of the ports, and send data, but nothing is returned. In order to verify services, I am required to connect and check for a banner or send appropriate protocol commands to elicit a response. Has anyone seen this, or have any idea of what this is? Thanks. --------------------------------------------------------------------------
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Current thread:
- Re: All tcp ports open?, (continued)
- Re: All tcp ports open? dreamwvr () dreamwvr com (Aug 29)
- Re: All tcp ports open? Tim (Aug 29)
- Re: All tcp ports open? Kevin Sheldrake (Aug 29)
- Re: All tcp ports open? Jose Maria Lopez (Aug 29)
- Re: All tcp ports open? Varun Pitale (Aug 29)
- RE: All tcp ports open? Mike Sues (Aug 30)
- Re: All tcp ports open? Jack Burton (Aug 30)
- Re: All tcp ports open? GUsh-T (Aug 30)
- Re: All tcp ports open? Chris Brenton (Aug 30)
- Re: All tcp ports open? Nathan R. Valentine (Aug 30)
- Re: All tcp ports open? sol seclists (Aug 30)
- RE: All tcp ports open? Don Parker (Aug 29)
- RE: All tcp ports open? Meidinger Chris (Aug 30)
- RE: All tcp ports open? Todd Towles (Aug 30)
- Re: All tcp ports open? David M. Zendzian (Aug 30)
- Re: All tcp ports open? Erik Birkholz (Aug 30)
- Re: All tcp ports open? Bill Burge (Aug 31)
- RE: All tcp ports open? Beaty, Bryan (Aug 30)
- RE: All tcp ports open? BĂ©noni MARTIN (Aug 31)
- RE: All tcp ports open? Altheide, Cory B. (IARC) (Aug 31)
- Re: All tcp ports open? M. D. (Aug 31)