localhost ports

[Jude DaShiell]

If you have arno-iptables-script running that blocks everything by default 
except what you tell it to open.
The /etc/hosts.deny file probably was set to deny access to everybody.
To get around this carefully, you may wish to open those ports up in 
/etc/hosts.allow and only those ports.  I think syntax would be something 
like:
127.0.0.1:4000
to open up port 4000 for use.  You for sure need to have:
127.0.0.1 in /etc/hosts.allow on a line by itself to allow local access 
generally.  The /etc/hosts.deny and /etc/hosts.allow are part of the 
tcpwrappers package.