I have my own dedicated server, but I am not an expert. I do have help when it comes to looking after the server, but I would like to get a second opinion.

Recently I have been seeing these messages in /var/log/messages. Could someone tell what are these mean or should I be worried about it?

Thanks guys!

-ipt_unclean: Zero TCP ports 0/8080
-ipt_unclean: TCP flags bad:3
-no server suitable for synchronization found
-kernel: 11 header:00:0d:87:24:ab:1d:00:90:69:3d:38:00:08:00
-kernel: martian source /server IP here/ from, on dev eth0