Re: analysis of auditable port scanning techniques

2001-01-16 Thread D. J. Bernstein
Dan Harkless writes: Theo de Raadt just informed me via email that OpenBSD fixed their identd to only report SS_CONNECTOUT sockets in 1996. The MTA and the FTP server and many other daemons will make outgoing TCP connections upon request. This bogus ``fix'' does not achieve the stated goal of

Re: analysis of auditable port scanning techniques

2001-01-15 Thread Dan Harkless
Dan Harkless [EMAIL PROTECTED] writes: Rainer Weikusat [EMAIL PROTECTED] writes: Dan Harkless [EMAIL PROTECTED] writes: Using this grammar applied to the data we send to an arbitrary host piped to the ident/auth port will reveal the process owner running on a given port, even

Re: analysis of auditable port scanning techniques

2001-01-08 Thread Dan Harkless
Rainer Weikusat [EMAIL PROTECTED] writes: Dan Harkless [EMAIL PROTECTED] writes: Using this grammar applied to the data we send to an arbitrary host piped to the ident/auth port will reveal the process owner running on a given port, even though we initiated the connection. Uh, no.

Re: analysis of auditable port scanning techniques

2001-01-08 Thread dethy
Using this grammar applied to the data we send to an arbitrary host piped to the ident/auth port will reveal the process owner running on a given port, even though we initiated the connection. Dan Harkness writes: Uh, no. With properly-written ident daemons, such as pidentd, the daemon

Re: analysis of auditable port scanning techniques

2001-01-08 Thread Michael S Soukup
-BEGIN PGP SIGNED MESSAGE- Section 1.5.2 of this paper describes an attack termed the "FTP server bounce attack". The author states that AIX is vulnerable to this type of attack. This is no longer true: this vulnerability was fixed some time ago in AIX versions 4.1, 4.2, and 4.3. APARS

Re: analysis of auditable port scanning techniques

2001-01-08 Thread Rainer Weikusat
Dan Harkless [EMAIL PROTECTED] writes: Using this grammar applied to the data we send to an arbitrary host piped to the ident/auth port will reveal the process owner running on a given port, even though we initiated the connection. Uh, no. With properly-written ident daemons, such as

Re: analysis of auditable port scanning techniques

2001-01-08 Thread John Ladwig
On Thu, 4 Jan 2001 20:32:01 -0800, Dan Harkless [EMAIL PROTECTED] said: Dan Guido Bakker [EMAIL PROTECTED] writes: 1.2.1 - reverse ident scanning This technique involves issuing a response to the ident/auth daemon, usually port 113 to query the service for the owner of