cvs commit: src/sys/netinet in_pcb.c

[Mike Silbersack]

On Fri, 23 Apr 2004, Mike Tancsa wrote:

> Hi, thanks for this commit.  I notice,
>
> net.inet.ip.portrange.lowfirst: 1023
> net.inet.ip.portrange.lowlast: 600
> net.inet.ip.portrange.first: 1024
> net.inet.ip.portrange.last: 5000
> net.inet.ip.portrange.hifirst: 49152
> net.inet.ip.portrange.hilast: 65535
> net.inet.ip.portrange.randomized: 1
>
>
> How are the ranges allocated to applications ?  A quick test of 30
> sequential outbound connections to another box on port 25 shows all
> allocations in the 1024 to 5000 range.  Is this the way it is supposed to
> be ?  Also, is there any caveats about moving that range from say 4000 to
> 20000 ?
>
>          ---Mike

The randomization is within the selected range, not randomization between
ranges.

You can change the first -> last range to anything you like, as long as
you stay above 1024.  The RFCs say to use 49152->65535, but some OSes use
1024->32768, some use 32768->65535, so anything you pick will be equally
ok. :)

Ignore the hifirst/hilast range, that's really only used by ftpd, it was a
way to give ftpd a larger range of ports without changing first/last.

Mike "Silby" Silbersack