Full Disclosure mailing list archives
Re: [tool] the new p0f 2.0.1 is now out
From: "thetic" <thetic_1900 () hotmail com>
Date: Thu, 4 Sep 2003 11:19:39 -0700
Question concerning the the POF, how can we setup a IDS to detect a POF scan. umer ----- Original Message ----- From: "Michal Zalewski" <lcamtuf () ghettot org> To: <honeypots () securityfocus com>; <pen-test () securityfocus com>; <focus-ids () securityfocus com>; <sectools () securityfocus com> Cc: <incidents () securityfocus com>; <bugtraq () securityfocus com>; <full-disclosure () netsys com> Sent: Wednesday, September 03, 2003 12:21 PM Subject: [tool] the new p0f 2.0.1 is now out
I am proud to announce the new stable version of p0f, 2.0.1, a complete rewrite of the original open-source tool released back in 2000, and a major step for the utility. I apologize for posting to all the forums, and leave it to the moderators to accept or drop this post - but I believe the tool is probably of some interest to the IDS / honeypot / pen-test / general ITSec audiences, and more appropriate forums are largely defunct. ------------ What is p0f? ------------ P0f v2 is a versatile passive OS fingerprinting tool. P0f can identify the system on machines that connect to your box, machines you connect to, and even machines that merely go thru or near your box. All this even if the device is behind a fascist packet firewall. P0f will also detect what the remote system is hooked up to (be it Ethernet, DSL, OC3, or avian carriers), how far it is located, what's its uptime, and will often detect NAT, firewall presence, and even the name of the other guy's ISP - all this without sending a single packet. What do you need it for? ------------------------ P0f is quite useful for gathering all kinds of profiling information about your users, customers or attackers (IDS, honeypot, firewall), tech espionage (laugh...), active or passive policy enforcement (restricting access for certain systems or otherwise handling them differently), content optimization, pen-testing, thru-firewall fingerprinting... plus all the tasks active fingerprinting is suitable for. And, of course, it has a high coolness factor, even if you are not a sysadmin. ----------- What's new? ----------- Almost everything. Please upgrade and encourage your vendor to update his packages. P0f v2 is far superior to the old code and its clones (such as the Ettercap passive OS fingerprinting functionality, based on the p0f v1 concepts). It is faster, more secure, reliable, precise, accurate, feature-loaded (including easy service integration). It also introduces many new metrics, some of them "invented" for p0f v2. NEW CORE CHECKS: - Option layout and count check, - EOL presence and trailing data [*], - Unrecognized options handling (TTCP, etc), - WSS to MSS/MTU correlation checks [*], - Zero timestamp check, - Non-zero ACK in initial SYN [*], - Non-zero "unused" TCP fields [*], - Non-zero urgent pointer in SYN [*], - Non-zero second timestamp [*], - Zero IP ID in initial packet, - Unusual auxilinary flags, - Data payload in control packets [*], - Non-empty IP options. [*] Metrics "invented" for p0f, as far as I know. Other metrics were discussed before, although usually not implemented anywhere. IMPROVEMENTS: - Major performance improvements - no more runtime signature parsing, added BPF pre-filtering, signature hash lookups - to make p0f
suitable
for high-throughput devices, - Modulo and wildcard operators for certain TCP/IP parameters to make it easier to come up with generic last chance signatures for systems that tweak settings notoriously (think Windows), - Auto-detection of DF-zeroing firewalls, - Auto-detection of MSS-tweaking NAT and router devices, - Media type detection based on MSS, with a database of common link types, - Origin network detection based on unusual ToS / precedence bits, - Ability to detect and skip ECN option when examining flags, - Better fingerprint file structure and contents - all fingerprints are rigorously reviewed before being added. - Generic last-chance signatures to cover general OS characteristics, - Query mode to enable easy integration with third party software - p0f caches recent fingerprints and answer queries for src-dst combinations on a local stream socket in a easy to parse form, - Usability features: greppable output option, daemon mode, host name resolution option, promiscuous mode switch, built-in signature collision detector, ToS reporting, etc, - "Officially unsupported" SYN+ACK fingerprinting mode for silent identifications of systems you connect to the usual way (web browser, MTA), - Fixed WSCALE handling in general, and WSS passing on little-endian, many other bug-fixes and improvements of the packet parser (including some sanity checks). -------------------- Download, demo, etc. -------------------- P0f home page is: http://lcamtuf.coredump.cx/p0f.shtml Download: http://lcamtuf.coredump.cx/p0f.tgz Contribute / see it in action: http://lcamtuf.coredump.cx/p0f-help/ P0f is believed to run fine on Windows, Linux, FreeBSD, NetBSD, OpenBSD, MacOS X, Solaris and AIX. Please consider contributing to the project if you liked it.
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Current thread:
- [tool] the new p0f 2.0.1 is now out Michal Zalewski (Sep 03)
- Re: [tool] the new p0f 2.0.1 is now out thetic (Sep 04)
- Re: [tool] the new p0f 2.0.1 is now out Daniel Bartlett (Sep 04)
- Re: Re: [tool] the new p0f 2.0.1 is now out Andreas Gietl (Sep 04)
- RE: Re: [tool] the new p0f 2.0.1 is now out Matt Barrie (Sep 04)
- RE: Re: [tool] the new p0f 2.0.1 is now out Michal Zalewski (Sep 04)
- Re: Re: [tool] the new p0f 2.0.1 is now out simon (www.snosoft.com) (Sep 04)
- Re: Re: [tool] the new p0f 2.0.1 is now out SPAM (Sep 04)
- Re: Re: [tool] the new p0f 2.0.1 is now out Thor Larholm (Sep 04)
- Re: Re: [tool] the new p0f 2.0.1 is now out Robert Jaroszuk (Sep 04)
- Re: Re: [tool] the new p0f 2.0.1 is now out morning_wood (Sep 04)
- Re: Re: [tool] the new p0f 2.0.1 is now out Michal Zalewski (Sep 05)
- Re: [tool] the new p0f 2.0.1 is now out thetic (Sep 04)