TCP Logs Why "Connection attempt to closed port"

[David Southwell]

Large quantities of these errors constantly appear in log/dmesg.today.

Can anyone explain what is going on and whether any action is needed. If so 
how to go about tracing the cause.

Thanks in advance for any guidance

David
TCP: [::1]:61570 to [::1]:4713 tcpflags 0x2<SYN>; tcp_input: Connection 
attempt to closed port
TCP: [127.0.0.1]:62307 to [127.0.0.1]:4713 tcpflags 0x2<SYN>; tcp_input: 
Connection attempt to closed port

Photographic Artist
Permanent Installations & Design
Creative Imagery and Advanced Digital Techniques
High Dynamic Range Photography & Official Portraiture
Combined darkroom & digital creations
& Systems Adminstrator for the vizion2000.net network