Ethical Hacking Learn to find vulnerabilities before the bad guys do! Gain real world hands on hacking experience in our state of the art hacking lab. Course designed and taught by expert instructors with years of penetration testing experience. 12 student maximum in every class. Certification attempt included in every package. | Computer Forensics Training at InfoSec Institute Gain the in-demand skills of a certified computer examiner, learn to recover trace data left behind by fraud, theft, and cybercrime perpetrators. Discover the source of computer crime and abuse at your organization so that it never happens again. All of our class sizes are guaranteed to be 12 students or less to facilitate one-on-one interaction with one of our expert instructors. |

| Subject: | Re: ICMP spoofed source tunneling |
|---|---|
| Date: | Wed, 22 Sep 2004 10:06:40 -1000 (HST) |
On Tue, Sep 21, 2004 at 08:55:04PM +0400, Max Tulyev wrote:Let's imagine in Net a hacker having his source server(S), destination server(D), and a ip-capable device - victim(V). S sends to V spoofed ICMP echo request packet containing IP source address of D, and the data in Payload. When V receiving that packet, it sends ICMP echo-reply packet to D, AND FORWARDS TO D ALL DATA IN PAYLOAD!This could also be used by peer-to-peer networks to achieve sender anonymity. (Of course you could also directly send UDP packets with forged source addresses...)
How does this give anonymity? When sending to the server, I must use the servers address as a source address. When the server replies to me, it must use my address as a source address. Maybe the two addresses dont appear in the same packet at the same time, but they're there. This might fool a few people when used a few times, but it will hardly fool everyone when it is in widespread use. Tim N.
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | RE: Diebold Global Election Management System (GEMS) Backdoor Account Allows Authenticated Users to Modify Votes, Jaeson Schultz |
|---|---|
| Next by Date: | Re: Microsoft's GDI Detetection Tool faults, John Bissell |
| Previous by Thread: | Re: ICMP spoofed source tunneling, fenfire |
| Next by Thread: | Re: ICMP spoofed source tunneling, fenfire |
| Indexes: | [Date] [Thread] [Top] [All Lists] |