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Re: NFS creates hidden port

From Rob van der Putten <rob@sput.nl>
Newsgroups linux.debian.user
Subject Re: NFS creates hidden port
Date 2017-08-22 12:10 +0200
Message-ID <uheie-T0-19@gated-at.bofh.it> (permalink)
References <uhdcu-8mO-15@gated-at.bofh.it> <uhdvQ-jp-23@gated-at.bofh.it> <uhdYS-uT-19@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Hi there


On 22/08/17 11:44, tomas@tuxteam.de wrote:

<Cut>

>> This raises the question why netstat does not show Rob's NFS ports.
>> Does NFS change the port fast enough so that netstat and port scan differ ?
> 
> A good question. I guess we need more details from the OP.

The hidden port lingers on for days. Until one restarts NFS. NFS then 
uses an other port which clearly shows in netstat, until it becomes 
hidden again. And the daily rkhunter [1] starts complaining about it.

[1] https://en.wikipedia.org/wiki/Rkhunter

I think this may be a kernel bug.


Regards,
Rob

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Thread

NFS creates hidden port Rob van der Putten <rob@sput.nl> - 2017-08-22 10:40 +0200
  Re: NFS creates hidden port tomas@tuxteam.de - 2017-08-22 11:00 +0200
  Re: NFS creates hidden port <tomas@tuxteam.de> - 2017-08-22 11:00 +0200
    Re: NFS creates hidden port "Thomas Schmitt" <scdbackup@gmx.net> - 2017-08-22 11:20 +0200
      Re: NFS creates hidden port <tomas@tuxteam.de> - 2017-08-22 11:50 +0200
        Re: NFS creates hidden port Rob van der Putten <rob@sput.nl> - 2017-08-22 12:10 +0200
          Re: NFS creates hidden port <tomas@tuxteam.de> - 2017-08-22 12:30 +0200
          Re: NFS creates hidden port "Thomas Schmitt" <scdbackup@gmx.net> - 2017-08-22 12:40 +0200
            Re: NFS creates hidden port Rob van der Putten <rob@sput.nl> - 2017-08-22 13:50 +0200
              Re: NFS creates hidden port "Thomas Schmitt" <scdbackup@gmx.net> - 2017-08-22 15:30 +0200
                Re: NFS creates hidden port Rob van der Putten <rob@sput.nl> - 2017-08-22 17:20 +0200
                Re: NFS creates hidden port "Thomas Schmitt" <scdbackup@gmx.net> - 2017-08-22 18:10 +0200
                Re: NFS creates hidden port Rob van der Putten <rob@sput.nl> - 2017-08-23 13:50 +0200

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