Re: UDP Broadcasts
Re: UDP Broadcasts
- Subject: Re: UDP Broadcasts
- From: Duane Murphy <email@hidden>
- Date: Sun, 28 Apr 2002 10:36:14 -0700
--- At Sat, 27 Apr 2002 11:59:10 -0700, Josh Graessley wrote:
>
On 4/27/02 2:40 AM, "Jens Bauer" <email@hidden> wrote:
>
>
> Hi Tomas,
>
>
>
> (Sorry for cross-posting, but I believe that there are more people on the
>
> network list, who knows about this)
>
>
>
> On Fri, 26 Apr, 2002, Tomas Zahradnicky, Jr. <email@hidden> wrote:
>
>
>
>> is possible to make an udp broadcast to look for an entity
>
>> registered somewhere in the subnet and be non root? I haven't found
>
>> any other way which will be cross platform then registering on some
>
>> udp port and wait for broadcasts and respond to the broadcast
>
>> originator with my data. NSL seems to be not working properly and
>
>> ldap module is no longer supported.
>
>
>
> As far as I know, any UDP access needs root access.
>
> (anybody, correct me if I'm wrong)
>
>
UDP only requires root privileges if your trying to bind to a port number
>
less than 1024 or is it 4096? I can never remember. There should be no
>
issues using UDP on ports greater than that arbitrary magic number.
The maximum secured port number is 1024 and its only arbitrary in that
the IETF chose to regulate and call those port numbers below 1024 as well
known. If you choose to use a port number below 1024 you are obligated to
register that service with the IETF.
...Duane Murphy
Efficient Networks, Inc.
<
http://www.efficient.com/>
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