Not able to perform connection slave browser and tomcat application in master system

I have tried to connect slave system of jenkins(continous integration) with master, i am able to connect through url, but soon after connection through slave agent..i am getting server rejecting the connection.

So my question is only needed to change the port number in config file tomcat, if i make the system where tomcat running whose ip as static and open the port..
ONLY CHANGING OF PORT NUMBER IS REQUIRED OR ANY OTHER MODIFICATION IN CONFIGURATION I NEEDED TO MAKE?

Exception . java.lang.exception.. server getting rejected..while handshaking is going on?..it is sending the packet, but not replying..ping operation is working,, And port is open..no firewall..

Thanks in Advance,
varghese