Re: [OT] Re: BUG: Unusual TCP Connect() results.

From: Alastair Poole
Date: Fri Jun 10 2005 - 07:26:46 EST


Kyle Moffett wrote:

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.

>> These ports are definately not opened, yet still connect() returns 0 with new kernels for ports
>> that it should not. I should have been more specific with nmap; even when specifying port ranges
>> nmap still does not return these odd results upon a basic tcp scan. Only basic scanner like the ones
>> mentioned and included in the first post. No other RPC services or TCP daemons are running
>> these are definately rogue ports. Running on x86 and kernels 2.6.11.10, 2.6.11.11 and 2.6.12-rc6
>> the unusual results still persist when using these basic port scanners upon localhost. I have someone
>> else who has confirmed to me the same results. Can anyone here?
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