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Groups > comp.lang.java.programmer > #27312

Re: ephemeral ports [was: New Java JDK released]

Date 2014-01-16 09:42 +0000
From lipska the kat <lipskathekat@example.com>
Organization Trollbusters 3
Newsgroups comp.lang.java.programmer
Subject Re: ephemeral ports [was: New Java JDK released]
References (5 earlier) <lb72r1$on1$1@dont-email.me> <52d72450$0$2958$e4fe514c@news2.news.xs4all.nl> <52d74f75$0$305$14726298@news.sunsite.dk> <52d79398$0$2845$e4fe514c@news.xs4all.nl> <AwNBu.619$ol1.490@fx03.iad>
Message-ID <4tadnc6XmOgINErPnZ2dnUVZ8uWdnZ2d@bt.com> (permalink)

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On 16/01/14 09:21, Wayne wrote:
> On 1/16/2014 3:08 AM, Silvio wrote:
>> On 01/16/2014 04:18 AM, Arne Vajhøj wrote:
>>>
>>> Are there any reason to believe that this change is platform specific?
>>>
>>
>> Yes. The so called "ephemeral port range" differs per Linux version/distro for example.
>
> I'm not sure about that.  "ephemeral port" is not a defined term.

Well possibly not but it is widely used and understood
Also, on Linux it is possible to modify the range of ephemeral ports.

http://www.ncftp.com/ncftpd/doc/misc/ephemeral_ports.html#Linux

On this kernel 3.2.0-23 box

$ cat /proc/sys/net/ipv4/ip_local_port_range
32768	61000

$ sudo echo "1024 4999" > /proc/sys/net/ipv4/ip_local_port_range

changes the range

IANA doesn't 'define' an ephemeral port range IIRC, rather it is a 
'suggestion'


-- 
Lipska the Kat©: Troll hunter, sandbox destroyer,
treacherous feline and farscape dreamer of Aeryn Sun
GNU/Linux user #560883 - http://www.linuxcounter.net

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Thread

New Java JDK released Roedy Green <see_website@mindprod.com.invalid> - 2014-01-14 21:45 -0800
  Re: New Java JDK released "Qu0ll" <Qu0llSixFour@gmail.com> - 2014-01-15 18:30 +1100
    Re: New Java JDK released Roedy Green <see_website@mindprod.com.invalid> - 2014-01-15 03:37 -0800
      Re: New Java JDK released Arne Vajhøj <arne@vajhoej.dk> - 2014-01-15 22:24 -0500
        Re: New Java JDK released Joerg Meier <joergmmeier@arcor.de> - 2014-01-16 12:41 +0100
  Re: New Java JDK released Silvio <silvio@internet.com> - 2014-01-15 15:43 +0100
    Re: New Java JDK released Donkey Hottie <donkey@fredriksson.dy.fi> - 2014-01-15 21:28 +0200
      Re: New Java JDK released markspace <markspace@nospam.nospam> - 2014-01-15 11:46 -0800
        Re: New Java JDK released Silvio <silvio@internet.com> - 2014-01-15 23:34 +0100
          Re: New Java JDK released markspace <markspace@nospam.nospam> - 2014-01-15 14:41 -0800
            Re: New Java JDK released Silvio <silvio@internet.com> - 2014-01-16 01:14 +0100
              Re: New Java JDK released Arne Vajhøj <arne@vajhoej.dk> - 2014-01-15 22:18 -0500
                Re: New Java JDK released Silvio <silvio@internet.com> - 2014-01-16 09:08 +0100
                Re: ephemeral ports [was: New Java JDK released] Wayne <nospam@all.invalid> - 2014-01-16 04:21 -0500
                Re: ephemeral ports [was: New Java JDK released] Silvio <silvio@internet.com> - 2014-01-16 10:35 +0100
                Re: ephemeral ports [was: New Java JDK released] lipska the kat <lipskathekat@example.com> - 2014-01-16 09:42 +0000
                Re: New Java JDK released Knute Johnson <eternal@knutejohnson.com> - 2014-01-16 09:29 -0800
          Re: New Java JDK released Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2014-01-15 18:46 -0800
            Re: New Java JDK released Silvio <silvio@internet.com> - 2014-01-16 08:50 +0100
              Re: New Java JDK released Joerg Meier <joergmmeier@arcor.de> - 2014-01-16 12:45 +0100
                Re: New Java JDK released Silvio <silvio@internet.com> - 2014-01-16 13:05 +0100
    Re: New Java JDK released Roedy Green <see_website@mindprod.com.invalid> - 2014-01-15 16:14 -0800
      Re: New Java JDK released Silvio <silvio@internet.com> - 2014-01-16 01:19 +0100
        Re: New Java JDK released Roedy Green <see_website@mindprod.com.invalid> - 2014-01-17 01:47 -0800
  Re: New Java JDK released Michal Kleczek <michal_wytnijto@kleczek.org> - 2014-01-16 11:37 +0100

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