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Full Discussion: Tcp connection to Linux server fails
Top Forums UNIX for Dummies Questions & Answers Tcp connection to Linux server fails Post 302892184 by bakunin on Tuesday 11th of March 2014 10:42:12 AM
Old 03-11-2014
To be honest i do not know your application, but:
Quote:
Originally Posted by unienewbie
No connection could be made because the target machine actively refused it xxx.xxx.xxx.131:1521
this looks like you have to do some configuration work in your application. For a host to open a connection it has to have a daemon running which is listening to the port where the connection is attempted.

For instance: let's say you contact a web server. This means your browser creates a message, sends it to the target server, port 80 (or whatever is configured, but 80 is the default). Behind port 80 on the target server lurks the web server process (Apache, ...), which picks the message up, does something and sends a message back (like: serves up a web page). If the web server would not listen behind port 80, nothing would happen at all - the host would "refuse the connection".

This is why i think you simply have nobody listening behind port 1521, so that no connection comes to pass.

I hope this helps.

bakunin
 

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LEARN ABOUT DEBIAN

tcpconnect

TCPCONNECT(1)						      General Commands Manual						     TCPCONNECT(1)

NAME

       tcpconnect - general TCP/IP client

SYNOPSIS

       tcpconnect [-irv] [-l localaddr] host port

DESCRIPTION

       tcpconnect  creates  a TCP/IP connection to a server running on the machine host, listening to port port.  It then reads standard input and
       sends to the remote server, and data received from the server is printed to standard output.  When end-of-file is reached on both  standard
       input and the TCP/IP connection, tcpconnect terminates.

OPTIONS

       -i     Terminate at end-of-file on standard input; don't wait for the server to close the connection.

       -r     Terminate when the remote server closes the connection; don't wait for end-of-file on standard input.

       -v     Verbose mode.  Prints a message to standard error when the connection has been established.

       -l addr:port
	      Bind  the local end-point of the connection to IP address addr, TCP port port.  Either the IP address or the port, but not both, may
	      be left out, meaning that the operating system gets to choose that part by itself.

SEE ALSO

       tcplisten(1), telnet(1), tcpbug(1).

BUGS

       The names of the options are not yet finalized, and may change at a future release.

								   1997 April 13						     TCPCONNECT(1)
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