can't remote access to port 631?

Fri Jan 13 01:20:12 PST 2006

hi
i got this error

[root at rojak ~]# telnet localhost 631
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
quit
HTTP/1.0 400 Bad Request
Date: Fri, 13 Jan 2006 09:32:32 GMT
Server: CUPS/1.1
Upgrade: TLS/1.0,HTTP/1.1
Connection: close
Content-Type: text/html
Content-Length: 101

<HTML><HEAD><TITLE>400 Bad Request</TITLE></HEAD><BODY><H1>Bad Request</H1>Bad Request</BODY></HTML>
Connection closed by foreign host.

[root at rojak ~]# telnet 192.168.100.3 631
Trying 192.168.100.3...
telnet: connect to address 192.168.100.3: Connection refused
telnet: Unable to connect to remote host: Connection refused
[root at rojak ~]#

what's the cause? pls help me. thanks