[X-Newbies] Port Nos

[Norman Cohen]

Port numbers below 1024 are "reserved" and are known as "well-known 
ports."

 From Webopedia <http://www.webopedia.com/quick_ref/portnumbers.asp>:


In TCP/IP and UDP networks, a port is an endpoint to a logical 
connection and the way a client program specifies a specific server 
program on a computer in a network. Some ports have numbers that are 
preassigned to them by the IANA, and these are known as well-known 
ports (specified in RFC 1700). Port numbers range from 0 to 65536, but 
only ports numbers 0 to 1024 are reserved for privileged services and 
designated as well-known ports. This list of well-known port numbers 
specifies the port used by the server process as its contact port.

So, I think your router is correctly requesting that you connect to it 
using other than a well-known or reserved port for the service in 
question. You might also want to check out the apple tech document that 
lists ports used on OS X so the one you choose doesn't conflict with a 
service that you use or may want to use.

<http://docs.info.apple.com/article.html?artnum=106439>

Norm


Norman Cohen
nacohen at mac.com

"Nobody ever went broke underestimating the taste of the American 
public."
H. L. Mencken
On Sep 19, 2004, at 3:17 AM, Chris Walker wrote:

> I've just installed a new router and the syslog requires me to input a
> port number, possibly  for it to watch for attacks.  The default is 
> 514,
> I guess for Windows users, but it says that the number should be 
> greater
> than 1024 for MacOSX.