Network Blackjack Port Open?????#1025

[chachdogg]

I was scanning my ports with a port scanner and it came up with blackjack port open. Does anyone know what this is or how to shut it off?

[socalgal]

Hi chachdogg

http://www.robertgraham.com/pubs/firewall-seen.html


Many people ask the question what this port is used for. The answer is that this is the first port number in the dynamic range of ports. Many applications don't care what port they use for a network connection, so they ask the operating system to assign the "next freely available port". In point of fact, they as for port 0, but are assigned one starting with port 1024.

This means the first application on your system that requests a dynamic port will be assigned port 1024. You can test this fact by booting your computer, then in one window open a Telnet session, and in another window run "netstat -a". You will see that the Telnet application has been assigned port 1024 for its end of the connection.

As more applications request more and more dynamic ports, the operating system will assign increasingly higher port numbers. Again, you can watch this effect with 'netstat' as your browse the Internet with your web browser, as each web-page requires a new connection.

See here (http://www.isi.edu/in-notes/iana/assignments/port-numbers) :

blackjack 1025/tcp network blackjack
blackjack 1025/udp network blackjack

I "think" this nothing to worry about.. but I'm not positive. Moved to Networking forum - where the network wizards are http://sysopt.earthweb.com/forum/wink.gif