Have you tried to see in /etc/services if there is some port "named"
blackjack? Did you try to google for that port number?
> Hi and thanks,
> A netstat command produces a result I don't understand. The column in
> usually shows the user's IP address and port,(xxx.xxx.xxx.xxx.nnnn).
> However the entries in question, about a dozen our of a 100, appear to
> show the user attached to a port (?) named "blackjac", the actual entry
> looks like this, xxx.xxx.xxx.xxx.blackjac
> These people ARE not playing cards/games! Take my word for that!
> Any ideas!