From: Kyle Moffett <mrmacman_g4@mac.com>
To: Alastair Poole <alastair@unixtrix.com>
Cc: linux-kernel@vger.kernel.org
Subject: [OT] Re: BUG: Unusual TCP Connect() results.
Date: Thu, 9 Jun 2005 22:23:31 -0400 [thread overview]
Message-ID: <A0454426-3FE0-42F4-BA87-8B0BE18DFEAC@mac.com> (raw)
In-Reply-To: <42A8ABDB.6080804@unixtrix.com>
On Jun 9, 2005, at 16:51:39, Alastair Poole wrote:
> The number of ports listed changes in size and they appear to be
> random. For example, on one scan ports
> 22, 3455, 4532 and 6236
SSH and 3 RPC-based services, I would guess. This is not a kernel
bug, there are probably userspace applications which are opening
those ports, even something as simple as an FTP client in active
mode would do it. Please run "netstat -lp" to determine which
processes have opened each port.
> It is also interesting to note that a basic TCP nmap scan does not
> return these unusual results.
nmap doesn't scan higher-numbered ports by default, because those
ports are generally allocated dynamically by the kernel when user
programs indicate they do not care what port they are bound on.
Cheers,
Kyle Moffett
next prev parent reply other threads:[~2005-06-10 2:23 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-09 20:51 Alastair Poole
2005-06-10 2:23 ` Kyle Moffett [this message]
2005-06-10 13:24 ` [OT] " Alastair Poole
2005-06-10 15:28 ` Michal Schmidt
2005-06-10 16:55 ` Alastair Poole
2005-06-10 16:06 ` Michal Schmidt
2005-06-10 22:26 ` Willy TARREAU
2005-06-10 22:38 ` Willy Tarreau
2005-06-10 22:42 ` David S. Miller
2005-06-11 6:24 ` Willy TARREAU
[not found] ` <20050611074350.GD28759@alpha.home.local>
2005-06-11 19:32 ` [PATCH] fix small DoS on connect() (was Re: BUG: Unusual TCP Connect() results.) Herbert Xu
2005-06-11 19:51 ` Willy Tarreau
2005-06-12 8:13 ` Herbert Xu
2005-06-12 8:34 ` Willy Tarreau
2005-06-12 10:30 ` Herbert Xu
2005-06-12 11:40 ` Willy Tarreau
2005-06-12 12:06 ` Herbert Xu
2005-06-12 12:22 ` Thomas Graf
2005-06-12 13:16 ` Herbert Xu
2005-06-12 12:32 ` Willy Tarreau
2005-06-12 13:13 ` Herbert Xu
2005-06-12 13:33 ` Herbert Xu
2005-06-12 13:47 ` Willy Tarreau
2005-06-12 13:50 ` Herbert Xu
2005-06-12 14:24 ` Willy Tarreau
2005-06-13 4:48 ` Herbert Xu
2005-06-13 5:21 ` Willy Tarreau
2005-06-13 5:24 ` Herbert Xu
2005-06-13 6:17 ` Willy Tarreau
2005-06-13 7:45 ` Herbert Xu
2005-06-13 8:10 ` Willy Tarreau
2005-06-13 20:57 ` [PATCH] fix small DoS on connect() David S. Miller
2005-06-12 13:36 ` [PATCH] fix small DoS on connect() (was Re: BUG: Unusual TCP Connect() results.) Willy Tarreau
2005-06-12 14:44 ` Thomas Graf
2005-06-12 15:02 ` Willy Tarreau
2005-06-12 17:10 ` Denis Vlasenko
2005-06-12 17:36 ` Willy Tarreau
2005-06-12 17:47 ` Denis Vlasenko
2005-06-12 18:14 ` Willy Tarreau
2005-06-13 2:04 ` Valdis.Kletnieks
2005-06-11 15:34 ` BUG: Unusual TCP Connect() results Alastair Poole
2005-06-11 14:38 ` Willy Tarreau
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