Thanks for the information;
It would seem that when I invoke the connect() system call, it picks a client
port in the portrange.first-last range and not necessarily in
portrange.hifirst-hilast. Is this expected behavior, or a bug in connect()?
- .Dustin
On Nov 12, 2012, at 12:49 PM, Colin O'Keeffe <[email protected]> wrote:
> 8.1 through 9.1RC will use net.inet.ip.portrange.hifirst (49152) to .hilast
> (65535) for ephemeral ports as far as I'm aware. net.inet.ip.portrange.first
> to .last are just a reference to available port numbers as per RFC6056
>
> Correct me if I'm wrong but netinet/in_pcb.c:490 indicates this is the case.
>
> -Colin
>
> On 12 Nov 2012, at 17:57, Dustin Wenz wrote:
>
>> I'm trying to determine why the default ephemeral port range appears to be
>> 10000 through 65535 in at least 8.1 through 9.1RC. Documentation regarding
>> the lower bound on the range seems inconsistent. The FreeBSD website
>> (http://wiki.freebsd.org/SystemTuning) suggests that
>> net.inet.ip.portrange.first defaults to 49152, which I don't believe is
>> accurate.
>>
>> The IANA recommends the range be 49152 through 65535
>> (http://tools.ietf.org/html/rfc6056). Is there any particular reason why
>> net.inet.ip.portrange.first defaults to 10000?
>>
>> - .Dustin
>>
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